Vim li cas qhov sib tw ntawm cov hlau nplaum ze ntawm ob qib yuav tsis siv txhua zaus?
Jan 06, 2018| Ib qho yog qhov sib txawv ntawm qhov sib txawv loj heev
Qhov ob yog hais tias lub compass pointer tsuas tuaj yeem tig rov tav, thaum lub sib nqus kab ntawm quab yuam nyob ze ntawm lub ncej yog yuav luag txhua yam rau hauv av.
Dhau li ntawm qhov huab, sawv ntawm sab qaum teb, txhua sab yog sab qab teb.
Xa kev nug