如果你知道你必须给团队提供反馈，你就会更有动力。

It motivates you more if you know that you've got to provide feedback to a group.

youdao

好你知道你必须要做什么吗？

Okay. You know what you gotta do?

youdao

只要你看到辣椒的道路上，你知道你必须投中的。

As long as you see peppers on the path, you know you have to hit them.

youdao

If the question of time is not explicitly brought up, then you should know that you have to use this formula.

如果时间的问题并没有明确提出,那你应该知道,必须要用这个式子

耶鲁公开课 - 基础物理课程节选

Yeah, but I think it's also an important skill. You need to be able to express what you know

难，但是我也觉得这是一种重要的技能。你必须能够把你知道的表达出来，

沟通很重要 - SpeakingMax英语口语达人

So, all this language is produced because you can't ever get to that last thing; you have to keep hashing it over.

所以，这一切语言就产生了,因为你永远没法知道最后那点;,你必须一直详细讨论它。

耶鲁公开课 - 1945年后的美国小说课程节选