警犬也已经在公交车站上岗，上车前乘客都需要检查。

Police dogs were also on duty to check on bus stations, and passengers were required to be checked before boarding.

youdao

警犬也已经在公交车站上岗，上车前乘客都需要检查。

Police dogs were also on duty to check on bus stations, and passengers were required to be checked before boarding.

youdao