Now, we are very gentle in this course with respect to knowing integrals, but this is one you have to know.

这门课对积分,的要求并不高，但这个积分你们必须会算。

麻省理工公开课 - 热力学与动力学课程节选

Trotsky is not simple-minded in his literary taste, and he doesn't just sort of spontaneously insist that everybody has to write socialist realism.

列夫，托洛斯基的文学品味并不单一，他也不要求每人都必须,按以社会主义现实主义写作。

耶鲁公开课 - 文学理论导论课程节选

You will never in this class have to memorize anything about the periodic table.

这门课并不要求大家去背元素周期表,一点都不要求。

麻省理工公开课 - 化学原理课程节选

Just as a note, I cued you about the level of detail I'm expecting you to acquire from class and from the readings, and I'm not so interested that you memorize those particular sugars and which category they fall under, but it is interesting to know that there are different types of sugars.

温馨提示,我会告诉大家我希望你们,能从课堂和阅读中学到的知识深度,我并不要求大家记住这些特殊的糖类,以及他们都属于哪个类别,但是知道有不同类型的糖是有必要的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

These are completely optional, not required for the course, so there's no obligation for you guys to get involved in these things, but I'll mention these things as we go along in case anybody would like to get involved in working with professors or graduate students.

这些都是自愿选择的,而不是课程要求,所以并不强制你们都参加,但随着课程的进行,我还会不断提及,便于任何感兴趣的同学,能够与教授或研究生一同参与研究

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选