欢迎大家使用会议室，但用后必须把废弃物清理干净。

Anyone is welcome to use the meeting room but must wipe up the mess afterward.

youdao

欢迎大家使用会议室，但用后必须把废弃物清理干净。

Anyone is welcome to use the meeting room but must wipe up the mess afterward.

youdao