gōng / zuò / rén / yuán / yāo / qiú / suǒ / yǒu / chéng / kè / chū / shì / zhèng / jiàn / yǐ / biàn / yàn / míng / zhèng / shēn

工作人员要求所有乘客出示证件，以便验明正身。

The staff asked all passengers to show identification so that their identities could be verified.