Tsev Tsev Tsev Qiv Khoom Siv Unloading

Jianda tsev cog khoom cov khoom yog unloading nyob rau hauv peb cov neeg siv khoom qhov chaw, ntawm no ntau ua tsaug rau peb cov neeg muas zaub tshiab tshiab los ntawm lawv lub zos