-
27
Oct, 2021
Qhia Taw Qhia Txog Kev Tiv Thaiv-Kev Txhim Kho Cov Khoom Raw Raw
Kev tiv thaiv kev laus feem ntau muaj cov hauv qab no thiab ntsuas: tiv thaiv cov tawv nqaij ntawm cov txheej txheem sab nraud ib puag ncig, xws li tiv thaiv UV (ultraviolet ray...
-
16
Oct, 2021
Yam Kev Paub Yuav Tsum Ua Los Ua Cov Khoom Ua Kom Zoo Nkauj
Ua ntej tshaj plaws, koj yuav tsum tau piav qhia seb koj puas xav tshawb fawb thiab tsim khoom kom zoo nkauj? Kev lag luam khoom siv tshuaj pleev ib ce? Puas yog nws yog daim nt...
-
28
Nov, 2020
Suav Tshuaj Tshuaj Thiab Nroj Nroj Nroj
Txog kev noj qab haus huv ntawm xya txhiab tus neeg, peb yuav tsum txhim kho cov tshuaj suav sai, xya lab, tsis yog 1,3 billion! vim li cas? Vim tias Is Nrias teb, Tim Nkij teb ...
-
28
Nov, 2020
Puas yog Suav Tshuaj Tshawb Xyuas Tseem Suav Tshuaj?
Puas yog cov tshuaj suav tshuaj suav tseem yog suav tshuaj? Rau cov lus nug no, cov neeg sib txawv yuav muaj cov lus teb sib txawv, tej zaum koj tsis tau them sai sai rau nws. T...
-
26
Sep, 2020
Vim Li Cas Yuav Tsum Tso Tshuaj Ntxiv rau Cov Tshuaj Txhuam?
Vim li cas thiaj yuav tsum muaj cov tshuaj khaws cia ntxiv? Ib puag ncig ntawm peb nyob yog lub ntiaj teb uas muaj cov kab mob me. Ntev npaum li lub hau npog ntawm cov tshuaj pl...
-
26
Sep, 2020
Kawm Los Saib Rau Hauv Tshuaj Pleev Cov Khoom Ua Si Thiab Tsis Txhob Hnav!
Tshuaj pleev ib ce, xws li khaub ncaws zam, muaj lawv tus kheej zam. Tsis tsuas yog ua cov khoom pleev, tab sis kuj ua rau khoom tu tawv nqaij yog qhov tseeb. Ntau xyoo dhau los...
-
18
Jul, 2020
-
18
Jul, 2020
-
21
Apr, 2020
-
21
Apr, 2020