Yog hlau combustible plua plav

Raws li feem ntau tshwm sim, Nws yuav tsis.

Hlau hmoov yog feem ntau categorized ua ib oxide, Paub txog nws cov tshuaj ruaj khov, Ua rau nws kis tsis khws pes tsawg los txuam yuaj rua cov tshuaj tiv thaiv ntawm chav tsev kub.