Science 2024, Hlis ntuj nqeg

Vim li cas cov dav hlau ya? Yuav tsum muaj yam tsawg kawg nkaus rau kev tawm mus

Txiv neej yeej ib txwm ua npau suav ya saum ntuj. Nco ntsoov zaj dab neeg ntawm Icarus thiab nws tus tub? Qhov no, ntawm chav kawm, tsuas yog ib qho lus dab neeg xwb thiab peb yuav tsis paub tias nws tshwm sim tiag tiag li cas, tab sis zaj dab neeg no nthuav tawm tag nrho kev nqhis dej rau saum ntuj. Kawg hloov kho: 2023-12-17 05:12

CS tshuaj: keeb kwm ntawm kev tsim, tshuaj lom neeg thiab kev siv

Substance CS: keeb kwm ntawm nws qhov kev tshawb pom, lub cev thiab tshuaj lom neeg. Kev cuam tshuam rau tib neeg lub cev. Kev siv cov compound rau kev ua tub rog-kev nom kev tswv. Kev cuam tshuam ib puag ncig. Kev ntsuas tsim nyog thaum muaj kev lom nrog chlorobenzalmononitrile. Kawg hloov kho: 2023-12-17 05:12

Constellation Perseus: keeb kwm, qhov tseeb thiab lus dab neeg. Lub hnub qub ntawm lub constellation Perseus

Daim duab qhia lub ntuj lub hnub qub yog qhov pom kev zoo nkauj thiab ntxim nyiam, tshwj xeeb tshaj yog tias nws yog lub ntuj tsaus ntuj. Tawm tsam qhov keeb kwm yav dhau los ntawm Milky Way stretching raws txoj kev hazy, ob qho tib si ci ntsa iab thiab ci ntsa iab me ntsis hnub qub uas ua rau ntau lub hnub qub pom zoo kawg nkaus. Ib qho ntawm cov hnub qub no, nyob yuav luag tag nrho hauv Milky Way, yog lub hnub qub Perseus. Kawg hloov kho: 2023-12-17 05:12

"Chlorhexidine" - yog dab tsi? Yuav ua li cas dilute thiab siv "Chlorhexidine" li cas?

"Chlorhexidine" - yog dab tsi? Cov lus nug muaj ntau heev, thiab hnub no peb yuav tham txog qhov kev npaj kho mob no. Kawg hloov kho: 2023-12-17 05:12

Kev ua haujlwm ntawm kev sib txhuam quab yuam ntawm so, zawv zawg thiab dov. Cov qauv thiab cov piv txwv ntawm cov teeb meem

Hauv ntu tshwj xeeb ntawm physics - dynamics, thaum lawv kawm txog kev txav ntawm lub cev, lawv xav txog lub zog ua haujlwm ntawm lub zog txav. Cov tom kawg tuaj yeem ua haujlwm zoo thiab tsis zoo. Hauv kab lus no, peb yuav txiav txim siab seb qhov haujlwm ntawm kev sib txhuam yog dab tsi thiab yuav suav li cas. Kawg hloov kho: 2024-01-02 17:01

Lub plawv ntawm ntses yog dab tsi? Ntses lub plawv chav

Lub plawv ntses yog dab tsi? Peb tsab xov xwm tau mob siab rau rau lub ntsiab lus no, uas peb yuav qhia koj seb muaj pes tsawg chav hauv lub plawv ntses muaj thiab nws ua haujlwm li cas. Kawg hloov kho: 2023-12-17 05:12

Lub hli thiab hli puv hli

Lub hom phiaj ntawm ntau yam kev tshawb fawb thiab kev qhia esoteric, qhov kev tshoov siab ntawm cov kws sau paj huam thiab romantics - tag nrho cov no yog tag nrho lub hli. Cov duab ntawm lub hnub qub hmo ntuj qhia cov lus hais txog qhov chaw ua tiav thiab kev tshawb pom, thiab tib lub sijhawm hais txog kev ua khawv koob thiab kev ntseeg. Dab tsi yog tag nrho lub hli los ntawm qhov pom ntawm astronomy, dab tsi kev ntseeg muaj feem cuam tshuam nrog nws thiab dab tsi yog cov txiaj ntsig ntawm kev tshawb fawb uas txheeb xyuas lawv - qhov no yuav tau tham hauv tsab xov xwm. Kawg hloov kho: 2023-12-17 05:12

Kev nrug deb ntawm qhov chaw. Astronomical unit, lub teeb xyoo thiab parsec

Rau lawv cov kev suav, astronomers siv cov ntsuas tshwj xeeb uas tsis tshua meej rau cov tib neeg. Nws yog to taub, vim hais tias yog cosmic nrug tau ntsuas nyob rau hauv kilometers, ces tus naj npawb ntawm zeros yuav ripple nyob rau hauv lub qhov muag. Yog li ntawd, txhawm rau ntsuas qhov kev ncua deb ntawm cosmic, nws yog ib qho kev cai siv ntau qhov ntau: ib chav astronomical, lub teeb xyoo, thiab parsec. Kawg hloov kho: 2023-12-17 05:12

Hnub qub pawg: txhais, nta thiab hom

Nyob rau hmo ntuj hauv huab cua ntshiab, koj tuaj yeem pom ntau lub teeb me me - hnub qub. Qhov tseeb, lawv qhov loj me tuaj yeem loj thiab ntau pua lossis ntau txhiab zaus loj dua qhov loj ntawm lub ntiaj teb. Lawv tuaj yeem nyob nyias, tab sis qee zaum tsim ib pawg hnub qub. Kawg hloov kho: 2023-12-17 05:12

Lub hauv paus ntsiab lus ntawm lub laser: nta ntawm laser hluav taws xob

Thawj lub hauv paus ntsiab lus ntawm lub laser, uas nws lub cev yog raws li Planck txoj cai ntawm hluav taws xob, yog theoretically substantiated los ntawm Einstein nyob rau hauv 1917. Nws tau piav qhia txog kev nqus, ua kom muaj zog thiab txhawb nqa hluav taws xob hluav taws xob siv hluav taws xob zoo li qub (Einstein coefficients). Kawg hloov kho: 2024-01-02 17:01

Pab lub qhov ncauj (anatomy). Qhov ncauj kab noj hniav: qauv, physiology

Lub hauv qab (diaphragm) ntawm qhov ncauj kab noj hniav yog tsim los ntawm ntau cov leeg nyob nruab nrab ntawm tus nplaig thiab cov pob txha hyoid. Cov qauv ntawm nws cov mucous membrane yog tus cwj pwm los ntawm kev loj hlob ntawm submucosa, uas suav nrog cov ntaub so ntswg adipose thiab xoob. Kawg hloov kho: 2023-12-17 05:12

Lub foob pob neutron thiab nws lub luag haujlwm hauv "kev sib tw caj npab"

Yuav luag txhua tus neeg Soviet nco ntsoov li cas tsoomfwv hauv xyoo 1980 ntshai cov pej xeem nrog riam phom tshiab txaus ntshai tsim los ntawm "kev ua lag luam lwj". Cov neeg qhia nom tswv hauv cov tsev kawm ntawv thiab cov kws qhia ntawv hauv tsev kawm hauv cov xim uas txaus ntshai tshaj plaws tau piav qhia txog kev phom sij rau txhua yam muaj sia uas lub foob pob hluav taws xob, uas tau txais los ntawm Tebchaws Meskas, ua rau. Kawg hloov kho: 2023-12-17 05:12

Yuav ua li cas xam thaj tsam ntawm lub pyramid: puag, sab thiab tag nrho?

Thaum npaj rau kev xeem hauv lej, cov tub ntxhais kawm yuav tsum ua kom lawv txoj kev paub txog algebra thiab geometry. Kuv xav muab tag nrho cov ntaub ntawv, piv txwv li, yuav ua li cas xam thaj tsam ntawm lub pyramid. Ntxiv mus, pib los ntawm lub hauv paus thiab sab ntsej muag mus rau thaj tsam ntawm tag nrho cov nto. Kawg hloov kho: 2023-12-17 05:12

Recursive algorithm: piav qhia, tsom xam, nta thiab piv txwv

Computers tau qhib lub horizons tshiab rau recursion, tab sis classical nco ntsoov ntawm tus tsim nyog tsim nyog tsis yog ib txwm npaj kom paub lawv. Cov tswv yim-oriented tuaj rau lub ntiaj teb ntawm cov ntaub ntawv ua ob zaug, tab sis thawj zaug cov ntaub ntawv ua tsis tau muaj kev txhawb nqa hardware, thiab lub thib ob lub sij hawm programming twb tau tswj lub nra rau nws tus kheej nrog cov classics ntawm ib hom ntawv nyeem. Kawg hloov kho: 2023-12-17 05:12

Social engineering: tswvyim, tus tsim, txoj hauv kev thiab piv txwv

Nyob rau hauv tsab xov xwm no peb yuav xyuam xim rau lub tswvyim ntawm "social engineering". Ib qho kev txhais dav dav ntawm lo lus yuav raug txiav txim siab ntawm no. Peb kuj yuav kawm txog leej twg yog tus tsim lub tswv yim no. Cia peb tham nyias txog cov txheej txheem tseem ceeb ntawm kev tsim vaj tsev sib raug zoo uas cov neeg tawm tsam siv. Kawg hloov kho: 2023-12-17 05:12

Thermodynamics yog Txhais, Kev Cai, Kev Siv thiab Txheej Txheem

Thermodynamics yog dab tsi? Qhov no yog ib ceg ntawm physics uas cuam tshuam nrog kev kawm txog cov khoom ntawm macroscopic systems. Nyob rau tib lub sijhawm, cov txheej txheem ntawm kev hloov pauv lub zog thiab cov txheej txheem ntawm nws txoj kev hloov pauv kuj poob rau hauv txoj kev tshawb no. Kawg hloov kho: 2023-12-17 05:12

Ntxim qab kawg li scientific facts

Peb feem ntau nyob deb ntawm kev tshawb fawb thiab nkag siab me ntsis txog nws, tab sis qhov no puas tiv thaiv peb los ntawm kev kawm txog cov lus tseeb txog kev tshawb fawb txog lub ntiaj teb uas nyob ib puag ncig peb? Ntau qhov nthuav, funny thiab amazing yog zais ntawm peb lub qhov muag. Kawg hloov kho: 2023-12-17 05:12

HSE: kev tshuaj xyuas cov tub ntxhais kawm. Tsev Kawm Ntawv Qib Siab Kev Lag Luam (Moscow)

Lub npe tag nrho ntawm lub tsev kawm ntawv yog National Research University Higher School of Economics, abbreviated as NRU HSE. Lub npe tsis raug cai yog qhov tshwm sim ntawm cov tub ntxhais kawm pej xeem kos duab - "Tower". Lub tsev kawm ntawv no yog nyob rau saum 5 lub tsev kawm ntawv qib siab zoo tshaj plaws hauv lub tebchaws thiab raug suav hais tias yog qhov kev vam meej tshaj plaws thiab muaj koob npe ntawm cov tuam txhab peev. Kawg hloov kho: 2023-12-17 05:12

Mnemic nco txheej txheem: hom, kev loj hlob thiab yam ntxwv

Nco yog ib lo lus tseem ceeb tshaj plaws hauv kev puas siab puas ntsws. Peb siv lub tswv yim no ntau zaus hauv lub neej txhua hnub. Nco nyob rau hauv psychology yog hu ua mnemonic kev ua ub no. Lub npe no muaj keeb kwm nthuav - tom qab lub npe ntawm leej niam ntawm cuaj muses thiab tus vajtswv poj niam ntawm kev nco Mnemosyne. Kawg hloov kho: 2023-12-17 05:12

Prince Enrique tus Navigator: biography thiab discoveries

Tus Tub Vaj Ntxwv Portuguese Enrique tus Navigator tau tshawb pom ntau thaj chaw, txawm hais tias nws tus kheej mus rau hiav txwv tsuas yog peb zaug. Nws cim qhov pib ntawm lub sijhawm ntawm kev tshawb pom thaj chaw zoo thiab txhim kho txoj haujlwm ntawm Portugal. Kawg hloov kho: 2023-12-17 05:12

Biology: lo lus txhais li cas? Tus kws tshawb fawb thawj zaug uas siv lo lus "biology"?

Biology yog ib lo lus siv los piav txog tag nrho cov kev tshawb fawb. Nws feem ntau kawm txog cov tsiaj nyob, nrog rau lawv cov kev cuam tshuam nrog lub ntiaj teb sab nraud. Biology tshawb nrhiav txhua yam ntawm lub neej ntawm txhua yam kabmob muaj sia, suav nrog nws keeb kwm, kev tsim tawm thiab kev loj hlob. Kawg hloov kho: 2023-12-17 05:12

Collagen fibers ntawm daim tawv nqaij

Collagen fibers ua lub luag haujlwm tseem ceeb hauv tib neeg lub cev. Lawv muaj lub luag haujlwm tsis tsuas yog rau elasticity ntawm daim tawv nqaij, tab sis kuj txhawb cov qauv ntawm cov kabmob sab hauv. Niaj hnub no, collagen kuj nquag siv hauv cosmetology. Yog li ntawd, daim tawv nqaij zoo li hluas dua thiab ntxim nyiam. Hauv peb tsab xov xwm koj tuaj yeem nrhiav cov ncauj lus kom ntxaws txog collagen fibers thiab lawv txoj haujlwm. Kawg hloov kho: 2023-12-17 05:12

Chlorine niam cawv - nta ntawm kev npaj thiab siv

Yuav ua li cas npaj cov tshuaj bleach stock rau tshuaj tua kab mob. Qhov piv ntawm cov khoom thiab cov kev cai rau kev npaj cov compositions. Nta ntawm bleach thiab nws qhov tsis zoo. Cov txheej txheem npaj thiab kev tiv thaiv kev nyab xeeb rau kev siv. Kawg hloov kho: 2023-12-17 05:12

Tus lej Indian Srinivasa Ramanujan: biography, kev txaus siab rau kev tshawb fawb thiab cov txiaj ntsig

Nyob rau hauv tsab xov xwm peb yuav tham txog Srinivasa Ramanujan, ib tug naas ej lej los ntawm Is Nrias teb. Tus txiv neej no tau ua ntau yam rau qhov kev tshawb fawb no, thiab ntxiv rau, nws nthuav rau nws phau ntawv keeb kwm. Txhua yam koj xav paub txog tus txiv neej no, nyeem cov lus hauv qab no. Kawg hloov kho: 2023-12-17 05:12

Chestnut xau, lawv cov khoom thiab kev faib tawm

Chestnut xau yog hu ua av, qhov xwm txheej rau kev tsim ntawm cov steppes qhuav. Cov khoom dab tsi ua cov av hauv av muaj pes tsawg leeg, lawv tau tsim, qhov twg lawv faib, nyeem hauv kab lus no. Kawg hloov kho: 2023-12-17 05:12

Hom kev soj ntsuam. Hom thiab cov qauv ntawm kev soj ntsuam xyuas

Tom qab nyeem tsab xov xwm no, koj yuav kawm seb hom ntawv twg, hom twg thiab cov kev soj ntsuam muaj nyob. Peb tab tom tham txog lawv qhov kev faib tawm hauv kev txheeb cais. Peb tawm tswv yim ua ntej xav txog hom kev soj ntsuam uas tau siv nyob rau hauv ceg ntawm kev paub no. Qhov yuav tsum tau xaiv ib qho kev xaiv sau cov ntaub ntawv hauv nws yog txiav txim siab los ntawm qhov tseeb tias muaj ntau hom kev soj ntsuam. Kawg hloov kho: 2023-12-17 05:12

Lub cev nqus tsev: cov yam ntxwv ntawm kev xav txog kev xav thiab kev tshawb fawb ntuj

Nrhiav cov lus teb rau lo lus nug ntawm dab tsi lub tshuab nqus tsev yog tsis yooj yim li nws zoo nkaus li thaum xub thawj siab ib muag. Qhov teeb meem no tau txhawj xeeb rau cov kws tshawb fawb txij thaum ub, thiab txawm tias niaj hnub no muaj ntau txoj hauv kev uas piav qhia lub cev ntawm qhov tshwm sim no. Kawg hloov kho: 2023-12-17 05:12

Tus qauv ntawm lub atomic nucleus: keeb kwm ntawm kev kawm thiab cov yam ntxwv niaj hnub

Tus qauv ntawm lub atomic nucleus yog ib qho ntawm cov teeb meem tseem ceeb ntawm kev tshawb fawb niaj hnub no. Kev sim tsis tu ncua hauv cheeb tsam no tau tso cai rau cov kws tshawb fawb tsis yog tsuas yog txiav txim siab nrog cov qib siab ntawm qhov tseeb tias lub atom yog dab tsi, tab sis kuj tseem siv cov kev paub uas tau txais hauv ntau yam lag luam thiab hauv kev tsim riam phom tshiab. Kawg hloov kho: 2023-12-17 05:12

Txoj kev yog dab tsi? Method: definition

Lo lus "txoj kev" muaj keeb kwm Greek. Txhais lus, txhais tau tias "txoj kev, taug txoj kev." Kev txhais lus txuas ntxiv ntawm lub tswv yim suav nrog cov txheej txheem ua, ib ntu ntawm cov kauj ruam lossis ib txheej txheej txheem uas yog tsom rau kev ua tiav ib txoj haujlwm tshwj xeeb. Ntawd yog, ib txheej ntawm cov phiaj xwm ua haujlwm yog ib txoj hauv kev. Lub ntsiab lus ntawm lo lus yuav hloov me ntsis thaum cov lus qhia meej txog cov hom thiab cov xwm txheej tshwj xeeb, tab sis, feem ntau, cov ntsiab lus tseem tsis hloov pauv. Kawg hloov kho: 2023-12-17 05:12

VLSI yog lub npe vim tias Ultra-loj kev sib xyaw ua ke: qhov ntev, qhov hnyav thiab piav qhia

Computer technology tab tom txhim kho sai heev. Muaj cov txheej txheem tshiab thiab kev txhim kho uas yuav tsum tau ua raws li qhov yuav tsum tau muaj zuj zus ntxiv. Ib qho ntawm qhov nthuav tshaj plaws yog qhov sib xyaw ua ke loj heev. Nws yog dab tsi? Vim li cas nws thiaj muaj lub npe zoo li no? Peb paub tias VLSI sawv cev li cas, tab sis nws zoo li cas hauv kev xyaum? Lawv siv qhov twg?. Kawg hloov kho: 2023-12-17 05:12

Txoj kev tshawb fawb - txhais, keeb kwm thiab nta

Txhua qhov kev tshawb fawb yog nyob ntawm ntau txoj hauv kev thiab cov txheej txheem. Lawv tag nrho yog cov lus qhuab qhia cais, hu ua methodology of science. Nyob rau hauv ib txwm kev txiav txim siab, qhov no yog ib feem ntawm txoj kev xav dav dav ntawm kev paub, ib feem ntawm kev xav. Cov ntsiab lus thiab lub tswv yim ntawm cov txheej txheem ntawm kev tshawb fawb yuav tau piav qhia hauv peb cov khoom. Kawg hloov kho: 2023-12-17 05:12

Txhua yam hais txog cov enzyme pepsin

Kab lus no yuav tsom mus rau qhov tseem ceeb enzyme pom hauv plab ntawm txhua tus tsiaj, suav nrog tib neeg. Cov ntaub ntawv dav dav txog cov enzyme pepsin, cov ntaub ntawv hais txog nws cov isomers thiab lub luag haujlwm ntawm cov tshuaj hauv kev zom zaub mov yuav raug txiav txim siab. Kawg hloov kho: 2023-12-17 05:12

Soil science yog Lub npe ntawm kev tshawb fawb, tus tsim, thaj chaw ntawm kev kawm, tus yam ntxwv, lub hom phiaj thiab theem ntawm kev loj hlob, cov thev naus laus zis niaj hnub th

Soil science yog ib qho tseem ceeb ntawm kev tshawb fawb niaj hnub no, kev kawm uas yog qhov tsim nyog rau kev cob qhia cov kws tshaj lij hauv ntau yam kev lag luam. Nws yog kawm tsis tau tsuas yog los ntawm av theorists, tab sis kuj los ntawm ecologists, geographers, tshwj xeeb tshaj yog nyob rau hauv txoj kev loj hlob ntawm deposits ntawm ntau yam fossil peev txheej, toj roob hauv pes architects thiab ntau lwm tus neeg. Kawg hloov kho: 2023-12-17 05:12

Lawv yog leej twg, cov poj koob yawm txwv ntawm tib neeg? Cov theem tseem ceeb ntawm tib neeg evolution

Cov kws tshawb fawb tsis tuaj yeem tuaj yeem pom zoo tias cov poj koob yawm txwv ntawm tib neeg yog leej twg, kev sib cav sib ceg hauv kev tshawb fawb tau tshwm sim ntau dua ib puas xyoo. Qhov kev xav nrov tshaj plaws ntawm evolution tau tawm tswv yim los ntawm tus naas ej Charles Darwin. Kawg hloov kho: 2023-12-17 05:12

Kev ruaj ntseg ntawm cov tshuab: lub tswv yim, cov qauv thiab cov xwm txheej

Ib lub luag haujlwm tseem ceeb ntawm kev tsom xam ntawm kev tswj hwm lub zog yog kev daws teeb meem ntawm lawv qhov kev ruaj ntseg. Lawv txoj kev ruaj ntseg yog ib qho tseem ceeb tshaj plaws ntawm kev tswj lub tswv yim. Lub kaw lus raug suav hais tias tsis ruaj khov yog tias nws tsis rov qab mus rau nws txoj haujlwm qub, tab sis txuas ntxiv oscillate tom qab nws tau dhau los ntawm qee qhov kev hloov pauv ntawm cov tswv yim, lossis nyob rau hauv qhov cuam tshuam ntawm qhov tsis xav tau kev cuam tshuam. Kawg hloov kho: 2023-12-17 05:12

Zooology yog kev tshawb fawb ntawm tsiaj. Keeb kwm ntawm txoj kev loj hlob ntawm zoology

Zoology yog kev tshawb fawb ntawm cov tsiaj uas kawm cov neeg sawv cev ntawm cov genus sib xws (Animalia). Qhov no suav nrog txhua hom kab mob uas noj zaub mov muaj protein, carbohydrates thiab rog. Xws li hom txawv ntawm cov nroj tsuag nyob rau hauv uas lawv tas li synthesize organic tshuaj tsim nyog rau lub neej los ntawm tej qhov chaw. Kawg hloov kho: 2023-12-17 05:12

Immersion oil: piav qhia, daim ntawv thov thiab tshuaj xyuas

Txoj kev immersion ntawm kev soj ntsuam microscopic cuam tshuam nrog kev qhia txog cov kua tshwj xeeb ntawm lub lens ntawm lub cuab yeej thiab cov khoom hauv kev kawm. Nws txhawb kev ci ntsa iab thiab nthuav dav ntawm cov duab magnification. Kawg hloov kho: 2023-12-17 05:12

Basic thiab superstructure - yog dab tsi?

Hais txog kev tawm tsam kev tshawb fawb, kev nkag siab zoo txog keeb kwm, qee yam kev nco qab, cov tswv yim, kev ntseeg lossis kev coj ncaj ncees, kev cai lij choj lossis kev nom kev tswv ua raws li lub hauv paus ntawm kev coj noj coj ua. Cov qauv kev sib raug zoo, kev sib raug zoo ntawm kev lag luam thiab kev loj hlob ntawm kev vam meej tag nrho yog li tshaj tawm tias nyob ntawm lawv. Txawm li cas los xij, ntawm ib theem keeb kwm, lub tswv yim no tau tawm tsam los ntawm lwm cov lus qhuab qhia. Kawg hloov kho: 2023-12-17 05:12

Reference point - yog dab tsi? Dab tsi yog cov ntsiab lus siv rau hauv kev tsim kho, geodesy, kev lag luam lossis kev tshawb fawb?

Reference point yog ib lo lus geodetic, lub ntsiab lus uas yog siv nyob rau hauv ntau qhov chaw ntawm lub neej: nyob rau hauv kev lag luam thiab kev lag luam, kev tsim kho thiab architecture, hauv kev ua si thiab ntsuas kub. Kawg hloov kho: 2023-12-17 05:12

Demography - hom kev kawm no yog dab tsi? Kev loj hlob ntawm pej xeem. Niaj hnub nimno demographics

Hmo ntuj yog lub sijhawm xov xwm thoob ntiaj teb. Cov neeg saib tau hnov ntau cov ntsiab lus uas tsis yog ib txwm meej thiab tsis tso cai rau koj nkag siab koj tus kheej hauv qhov tseem ceeb ntawm qhov teeb meem. Cov teeb meem pej xeem ntawm lub teb chaws, qhov teeb meem nyuaj rau pej xeem, cov teeb meem ntawm pej xeem - feem ntau cov kab lus no ya tawm ntawm lub qhov ncauj ntawm cov nom tswv, cov pej xeem cov duab, cov neeg sociologist thiab cov neeg nthuav qhia. Yuav kom nkag siab txog dab tsi yog nyob rau hauv ceg txheem ntseeg, koj yuav tsum paub koj tus kheej nrog lub sij hawm demographics. Kawg hloov kho: 2023-12-17 05:12