Raws li lub sijhawm dhau mus, lossis vim muaj kev hloov kho thev naus laus zis thiab rov ua dua tshiab, cov khoom lag luam nta lossis cov kev pabcuam hais hauv nplooj ntawv no yuav tsis siv ntxiv lawm. Thov hu rau peb kom tau txais cov ntaub ntawv khoom tshiab.X