Nws ua haujlwm li cas
Lub phaj kub hloov pauv tuaj yeem siv tshwj xeeb rau kev kho cua sov xws li cua sov thiab txias ntawm cov kua nruab nrab lossis nruab nrab muaj cov khoom ntxhib thiab fiber ntau.
Kev tsim tshwj xeeb ntawm lub tshav kub pauv phaj ua kom zoo dua cov hluav taws xob hloov hluav taws xob thiab kev poob siab dua li lwm yam khoom siv hluav taws xob sib hloov hauv tib yam. Kev khiav dej num ntawm cov kua dej hauv qhov dav dav channel kuj tau ua kom ntseeg tau. Nws paub txog lub hom phiaj ntawm tsis muaj "qhov chaw tuag" thiab tsis muaj qhov tso tawm lossis thaiv ntawm cov khoom ntxhib lossis raug tshem tawm.