Cia txias hauv lub teeb xim?
Hais lus lub cev, thaum qhov khoom' s ntsuas kub dua qis dua ntawm thaj chaw ib puag ncig, nws nqus cov cua sov ntawm nws ib puag ncig. Cov khaub ncaws ua si hauv lub teeb xim tsis nqus tsawg dua thaum tshav kub. Tab sis thaum qhov ntsuas cua kub sab hauv qis dua qhov khoom, qhov khoom xa hluav taws xob kub sab nraud.
Yog li, seb puas yuav hnav khaub ncaws hnav nyob rau lub caij ntuj sov yog qhov zoo nkauj tshaj, tsis yog nrog cov xim ntawm cov khaub ncaws, tab sis kuj nrog qhov chaw ib puag ncig uas tus neeg muaj kev txhawj xeeb.
Yog tias koj tau nphav raug tshav kub ncaj qha, yog tias qhov kub sab nraud siab dua li tib neeg lub cev, cov cua sov yuav hloov los ntawm huab cua mus rau tib neeg lub cev, thiab qhov ntsuas kub ntawm hluav taws xob los ntawm hnav cov khaub ncaws muaj xim yog qhov tsawg dua. Hauv qhov xwm txheej no, hnav cov khaub ncaws dawb uas muaj xim zoo nkauj dua.
Ntawm qhov tsis sib xws, nyob rau thaum yav tsaus ntuj lub caij ntuj sov lossis hauv chav huab cua sab hauv tsev, qhov ntsuas cua nyob ib puag ncig feem ntau qis dua li ntawm tib neeg lub cev. Lub sijhawm no, cov kev qhia txog kev hloov mus kub yog los ntawm tib neeg lub cev mus rau huab cua, yog li koj yuav tsum xaiv khaub ncaws tsaus, xws li dub, uas yog huab cua txias dua.
Peb paub tias hluav taws xob ultraviolet yog qhov tseem ceeb tshaj plaws uas ua rau ua rau daim tawv nqaij thiab txhua yam xim nqaij tawv, kev tshawb fawb tshawb pom, kev cuam tshuam uas hnav cov khaub ncaws dawb yog luv ntog hauv lub caij ntuj sov, yuav txias heev, tab sis vim tias muaj peev xwm tias cov khaub ncaws dawb absorbs ultraviolet duab tshav tsis zoo, raws li, lub sij hawm zuj zus, qhov kub siab dua ...
Cov ris tsho liab, los ntawm qhov tsis sib xws, nqus ntau lub hnub' s UV rays, yog li nws' s txias dua thiab tiv thaiv tshav tiv thaiv thaum koj' rov qab tiv tshav ntuj ntev ntev.
qhov chaw: Shen Dun Sha xian
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