pheej yig dua thiab tej zaum tsis muaj tshuaj lom ntau dua li luam yeeb, cov luam yeeb hluav taws xob tau paub ob peb xyoos ...
Tsawg nqi thiab tej zaum tsis muaj tshuaj lom ntau dua li luam yeeb, cov luam yeeb hluav taws xob tau ua tiav ntau xyoo. Futura-Sciences tau mus ntsib Paul Hofman, tus thawj coj ntawm lub lab ...