这张学生卡有什么作用呢？

What are the functions of this student card?

啊，我又忘了带上我的学生卡。

Oops! I forgot to bring my student ID again.

在大多数景区，学生卡能打半价。

In most scenic spots, a student ID can get a 50 percent discount.

当我读大学时，我用学生卡有一点疯狂。

When I was in college, I went a little wild with student credit cards.

我要挨个儿去每个用我的学生卡可以进去的图书馆学习！

I'm going to try and work in every library that my student card allows me access to.