So it's by no means do I mean to suggest, "Oh, here's everything you need to know about the subject."

所以我绝不是在暗示,关于这个话题,你需要知道的就这么多

耶鲁公开课 - 死亡课程节选

And it's pretty expensive to do so because I think they know you need to do it.

这样做很贵，因为我想他们知道你需要这么做。

公共交通更方便 - SpeakingMax英语口语达人

Then, you've got to say, "What do I have to know about this object at the initial time?

然后,也许你会问,我需要知道物体初始状态的哪些信息呢

耶鲁公开课 - 基础物理课程节选

So what I decided is that you need to know the whole book in the sense that you need to know all of the key terms and key points.

所以我决定了,我把掌握整本书的要求改为,你需要知道所有的关键词和关键点

耶鲁公开课 - 金融市场课程节选