Why does it start with square braced square brace?

这为什么以两个,方括号开始呢？

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So if we start actually pushing ourselves to think about examples-- does it really take one to know one--the answer is, at least as a general claim, it's not true.

所以假如我们开始,深入探讨一些例子,到底需不需要同类才能互知 答案是,至少通常来说,这是不需要的

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