Lub ntsiab lus ntawm daim ntaub ceev ceev nrawm yog cov xov paj lossis xov paj lossis xov paj lossis paj ntaub hauv ib qho ntev (1 nti = 2.45cm). Qhov no feem ntau qhia tias yog "xov rau ib ...

Thaum nws los txog rau kev kho mob, muaj ntau cov cuab yeej thiab cov khoom siv tau tsim los pab hauv cov neeg mob. Ib qho khoom siv xws li no yog daim npog ntsej muag tsis-rebreeth, uas ua ib qho tseem ceeb ...

Nyob rau hauv nruab nrab ntawm lub ntiaj teb thoob ntiaj teb, cov khoom tiv thaiv tus kheej (PPE) tau dhau los ua cov neeg ua haujlwm tseem ceeb rau kev tiv thaiv kev noj qab haus huv hauv ntej he ...

Kev hnav khaub ncaws kho mob yog ib qho kev hnav khaub ncaws uas ib txwm siv hauv kev kho mob. Nws yog ua los ntawm cov tsis huv, tsw qab

Koj puas tau xav dua vim li cas tib neeg hnav cov yas khau npog nyob rau qee lub sijhawm? Seb nws nyob hauv tsev kho mob, cov chav ntxuav, lossis cov chaw tsim khoom, cov khoom siv pov tseg no ...

Cov ntawv pov tseg pov tseg tau muaj cov muaj koob npe nrov hauv ntau qhov chaw, los ntawm cov chaw kho mob rau cov chaw so thiab kev mus ncig ua si. Tab sis yog cov chaw pw tom tshav puam etio ...