drop out (of )

　stop attending or taking part 退出

　fall into

　pass into a specified state 陷入

　graduate school

　a part of a college or university where you can study for a second or further degree 研究生院

　lose oneself in

　be extremely interested in something 沉浸于

　sign up

　sign an agreement to take part in something 报名参加

　try out

　test something by use, action, and experience, in order to find out about its quality, worth, effect, etc. 试用；试验

　Ohio

　俄亥俄（美国州名）