Lub sijhawm, cov ntsiab lus tseem ceeb thiab kev cia siab yav tom ntej ntawm kev lag luam valve hauv kev lag luam muaj kuab paug tswj kev lag luam
Nrog rau kev txhim kho txuas ntxiv ntawm tib neeg, kev loj hlob sai ntawm kev lag luam hauv ntau lub teb chaws, cov npoj yaig kuj tau coj peb ntau qhov chaw muaj kuab lom, hauv cov txheej txheem kev lag luam kev tiv thaiv thiab tswj, 2020 yog qhov kawg ntawm kev sib ntaus sib tua ntawm cov pa phem ...
saib kom meej