Nrog rau xyoo ntawm kev paub nyob rau hauv ntau lawm cov cuab yeej siv kho mob muag khoom , tuaj yeem muab cov khoom siv kho mob muag khoom . kho mob kom raws sijhawm txog tuaj yeem muab cov sijhawm kev kho mob muag khoom . Ntxiv rau cov khoom lag luam hauv qab no, koj tuaj yeem hloov koj tus kheej cov khoom siv kho mob muag raws li koj cov kev xav tau tshwj xeeb.