Muaj ob yam tseem ceeb ntawm kev ua haujlwm of the elevator: ib qho yog tias lub elevator dheev nres khiav; Qhov thib ob yog tias lub elevator poob tswj thiab ntog sai. Yuav tiv thaiv koj tus kheej li cas thaum lub elevator tsis ua haujlwm? 1. Yuav ua li cas hu rau kev pab yog tias lub qhov rooj of elevator poob? Yog tias lub elevator nres ...Nyeem ntxiv»