Qhov no khaws tau cov txiv hmab txiv ntoo lub voos txiav rau sab yog ib hom txiv hmab txiv ntoo tshiab, cov khoom siv roj hmab, thiab lwm yam los txhim kho cov khoom lag luam thiab cov khoom lag luam ntawm cov neeg muas zaub ntau.
Lub tshuab adopts cov khoom siv nias cov khoom siv, cov khoom siv tsis zoo, nws ua tau zoo dua qub, cov khoom siv tooj liab ua kom muaj zog, nws ua tau zoo nkauj, nws tau ua tiav, Ob - 'meter'-} dawb tooj liab core core, ua lub tshuab muaj kev nyab xeeb hloov.
