It's very exciting, but if you think you know everything you don't need to learn, you don't belong to us. I always need to learn.

这很令人兴奋，但如果你认为,你什么知道，你不需要学习了，那么请你退出百度，因为人总是在学习。

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But this is a good example of what you need to know.

这个例子很好地说明了你需要知道什么

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What else do you need to know?

你还需要知道什么？

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You have to know what are primary dealers.

你需要知道一级交易商是什么。

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