But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

但是，你知道，所有站在你们面前的老师,可能都会这样介绍他的课程,如果他们不那样相信着，那他们就不应该教那门课了。

麻省理工公开课 - 固态化学导论课程节选

You are now a history teacher. But did you ever go to New York museums when you were a student?

你现在是一个历史老师。但是你做学生的时候，去过纽约博物馆吗？

美国的博物馆教育 - SpeakingMax英语口语达人

It's not that the teachers are there for the income, but they need money too to live.

老师们并非为收入而来，但是他们也需要钱去过生活，

哈莱姆的变迁 - SpeakingMax英语口语达人