事实上，这个系统通常会阻止任何想要注册他们不应该选的课程的人，也就是那些没有选必选先修课程的学生。

In fact, usually the system blocks anyone trying to sign up for a class they shouldn't be taking, who hasn't taken the courses you are required to do first as prerequisites.

youdao

我特别关心出勤率，所以如果周二下午你有实践而不能每周都出勤的话，你不应该选这门课。

I am especially concerned about attendance, so if you have the practice these Tuesday afternoons and can't be here every week, you shouldn't take this course.

youdao

也许我不应该选那些课，而应该学历史或新闻。

Maybe I ought to major in history or journalism instead.

youdao

In fact,if you wanted to argue against, say,the Letter of Hebrews being included,you could say, "But all the people in the East don't accept the Letter of Hebrews as part of their canon,so we shouldn't,either."

实际上，如果你想反对，希伯来书被选上，你可以说，“但是东方的人都不承认希伯来书,属于他们的正典，所以我们也不应承认“

耶鲁公开课 - 新约课程节选