study for的用法和樣例：
例句
- It's difficult to study for a degree in Economics in evening classes while working during the day.
白天工作，僅晚上進夜校學習來獲取經濟學學位是不容易的。 - She shuts herself in her study for hours.
她一個人關在書房里一呆就是幾個小時。 - A course of study for graduate and advanced undergraduate students in a college or university, conducted in the manner of a seminar.
大學研究生班大學里為研究生和高年級的本科生設的以研討方式進行的研究班
