They practice various things for overseas travel, only to realize that none of them has a valid passport.

他们为出国旅行实践了各种各样的事情，然而才意识到他们都没有有效的护照。

He is carrying a valid passport.

当时他带着有效护照。

Valid passport original and copy;

有效护照原件与复印件；

A valid passport for each applicant.

每位申请人的有效护照。

He has a valid passport.

他有有效护照。