graduate in和graduate from 有什么区别?

graduate in:

毕业于...学科

例句与用法:
1. He is a graduate in medicine.
他是医科毕业生。

2. My son hopes to graduate in law, so as to become a lawyer.
我的儿子希望在大学攻读法律毕业成为律师。

3. He hopes his son to graduate in law, so as to become a lawyer.
他希望他儿子获得法学学位，以便当个律师。

graduate from:

从...毕业

例句与用法:
1. He will graduate from the school in May.
他将要在五月份毕业。

貌似见过后面一个，前面的不熟悉