You need to know的意思|示意

Really, do you need to know more about the book?

真的，你想对这部书了解更多吗？

What you need to know is that there's no evidence whatsoever to back these claims.

你需要知道的是这些论调根本没有依据可言。

You'll just have to survive these two very historical survey lectures, because it's material that you need to know.

你们得熬过这两堂很历史性的调查课，因为你们需要了解这材料。

Who do you need to know?

你要结交什么人？

First, you need to know a little about NIO.

首先，您需要对NIO有一定的了解。

But with bees, you need to know what you are doing.

但是，养蜜蜂，你必须知道自己在干什么。