Ua ntej, nrog rau kev saib xyuas cov pa oxygen: Tam sim no, nruab nrab-rau-qib-qib tshuab ntawm kev ua lag luam feem ntau siv BD meej LCD cov ntxaij vab tshaus, thiab muaj lawv tus kheej cov pa ntsuas pa txhawm rau txhawm rau txheeb xyuas, uas tuaj yeem tshawb xyuas cov pa oxygen ntawm lub tshuab tiag sij hawm Yog koj muaj nyiaj yuav qhov khoom no ...
Nyeem ntxiv