Ordinary soldiers do not attend, and that's one of the things I think we must grasp immediately.

普通士兵没有权力参加,这点是我们必须要记住的

耶鲁公开课 - 古希腊历史简介课程节选

because I do have elements that I really agree with such as you have to do community service.

因为这当中有我十分赞同的部分，比如你必须参加社区服务。

选美比赛的好处 - SpeakingMax英语口语达人

- You have to decide how much-- What you're told is you have to decide " who should be chosen to be on "College Bowl."

你必须决定-,你被告知必须决定,选谁参加“学院杯“

耶鲁公开课 - 心理学导论课程节选

But you must be here for the final.

但是你们必须来这参加期末考试。

麻省理工公开课 - 固态化学导论课程节选

So, in my freshmen year, there's like a science requirement that we have to take

所以，大一的时候，我们必须参加一个科学的课程，

考试考砸了怎么办 - SpeakingMax英语口语达人

You actually have to go down and do exams,

你实际上必须继续下去并且参加考试，

伦敦的出租车司机 - SpeakingMax英语口语达人

You are sitting in classrooms that in many cases oblige you to take exams.

坐在教室里，很多时候都必须参加考试。

耶鲁公开课 - 文学理论导论课程节选

So, it seemed like a good start for me, pre-med/bio, and I signed up for my bio class -- I found out, as Professor Drennen did, that I had to take chemistry as well. I wasn't as upset, I was sort of a neutral chemistry person at this point, but I thought it was pretty smart to get it over with on the first semester, so that's what I did.

一个既在科学上有挑战又能帮助他人的职业，从医学预科或者生物起家-,我参加了生物课，我和Drennen教授一样，我也必须要上化学课，我并没有很不爽,我当时对化学的态度很中立。

麻省理工公开课 - 化学原理课程节选

and then they have to go to their extracurricular activities.

然后他们也必须参加课外活动。

来普林斯顿吧 - SpeakingMax英语口语达人