Muaj ntau ntawm cov khoom lag luam ntawm kev ua lag luam, tab sis tsis yog txhua tus tuaj yeem thov rov hais dua rau cov neeg tuaj yeem dav dua li cov khoom qab zib kom qhuav. Tsis zoo li ib txwm muaj pos hniav, uas tuaj yeem yog qab zib lossis ntxo cov khoom qab zib, khov-ua khoom qab zib tuaj yeem nqa ib yam dab tsi tshiab, lom zem, thiab qab tsw rau t ...