①.A cov ntsiab lus ntawm cov ntawv hlau ua Sheet hlau ua yog hu ua cov ntawv hlau ua. Piv txwv li, kev siv phaj chimney, hlau thoob, roj tank tuaj yeem, qhov cua yeeb nkab, lub luj tshib loj lub taub hau, hnub vaj qhov chaw, funnel, thiab lwm yam., cov txheej txheem tseem ceeb yog shear, khoov buckle ntug, khoov, wel ...
nyeem ntxiv