我们必须遵守社会公德，做一个有礼貌的人。

We need to obey the social ethics, to be a polite person.

youdao

人人都遵守社会公德、行为规范，和谐就在我们身边。

Everyone abide by social morality, a code of conduct, and harmony on our side.

youdao

乘员应服从操作人员指挥，遵守社会公德和公共秩序。

Please follow the attendant's instructions, and observe public ethics and order.

youdao