Lub tshuab nqus tsev twj yog qhov tseem ceeb ntawm ntau qhov kev lag luam, ua lub luag haujlwm tseem ceeb hauv ntau yam kev siv xws li kev tsim khoom, ntim khoom, thiab kev tshawb fawb tshawb fawb.Cov khoom siv no yog tsim los tshem tawm cov roj molecules los ntawm qhov chaw kaw los tsim lub tshuab nqus tsev ib nrab, ua kom cov txheej txheem uas yuav tsum tau ...
Nyeem ntxiv