Cov tshuab txiav nyom tuaj yeem raug cais raws li cov txheej txheem sib txawv. 1. Raws li txoj kev mus ncig, nws tuaj yeem muab faib ua hom cab, rear laub hom, mount hom thiab tsheb laij teb ncua kev kawm ntawv hom. 2. Raws li lub zog tsav hom, nws tuaj yeem muab faib ua tib neeg thiab tsiaj tsav, cav tsav, hluav taws xob d ...
Nyeem ntxiv