Translation of "Economics" in Chinese

- I'm studying economics at university.
- I'm studying economics in college.

我正在大学里读经济。

I major in economics.

我專攻經濟學。

I'm studying economics at university.

我正在大学里读经济。

He's a specialist in economics.

他是经济学的专家。

He studies economics at university.

他在大學讀經濟學。

He is majoring in economics.

他的专业是经济学。

He studies Economics at the university.

他在攒钱上大学。

He is a great authority on economics.

- 他是權威的經濟學家。
- 他是經濟學的專家。

He is specializing in the study of economics.

他的专业是经济学。

Xavier is a young student in economics at Paris University.

Xavier是一个在巴黎大学学经济的年轻的大学生。

Excuse me, do you know where the economics department library is?

不好意思，请问你知道经济学部图书馆在哪里吗？