passport control 护照检查
renew passports 更新护照
valid passports 有效护照
foreign passports 外国护照
A: Do you have everyone's passports?
A：你把所有人的护照都带了吗？
B: Yes, I have all the passports in my bag.
B：是的，我把所有的护照都放在包里了。
1) 证明国籍和身份的政府官方文件
2) 允许跨越国境的合法旅行凭证
3) 进入特定领域或获得机会的象征（比喻义）
1. 护照
noun
1. Official documents issued by a government, certifying the holder's identity and citizenship and entitling them to leave and enter certain countries.
Synonym: travel documents