Dab tsi yog qhov siab ntawm qhov bar quav nyob rau hauv dav dav？
Mar 06, 2021
Cov cwj pwm sib txawv ntawm cov quav me me yuav muaj qhov sib txawv. Qhov siab ntawm dog dig quav quav tuaj yeem hloov kho kom haum raws li qhov xav tau tshwj xeeb ntawm cov neeg. Qhov siab ntawm lub vias bar tuaj yeem txiav txim siab raws li lub txee bar, nws yog qis dua qhov siab ntawm 20-40cm ntawm bar lub luag haujlwm. Nws yog nruab nrab ntawm 80-100 cm, uas feem ntau tsim nyog dua. Muaj tseeb, qee qhov chaw tshwj xeeb xav tau qee cov quav me dua me me, thiab qee qhov chaw tshwj xeeb xav tau qee cov quav me me. Nws nyob ntawm qhov xwm txheej tshwj xeeb.
Qhov tseeb, koj kuj tuaj yeem xaiv lub bar quav nrog qhov nqa ua kom tswj tau qhov siab ntawm yuav.
