Chav sib txuas

Kev txhais kom meej: Ob chav qhua chav nyob ib sab ntawm txhua lwm yam uas tau txuas nrog lub qhov rooj ntawm lawv. Lawv tuaj yeem muab ua ke nrog rau ib qho chaw ncig tebchaws, lossis tej zaum lawv yuav raug tshwj xeeb los ntawm ob tog sib txawv. Cov no yog qhov tseem ceeb yog tias koj mus nrog cov menyuam loj lossis ib pab pawg coob dua thiab xav tau chaw sau ntau ntxiv. Yog tias koj tsis paub cov qhua hauv chav sib txuas, nco ntsoov xyuas kom lub qhov rooj qhib xauv.