Over 5000 different compounds have been made from these bucky balls that we called.

从这些所谓的巴克球中，我们已经造出了超过5000种不同的合成物质。

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So it gives you an idea, how really tiny, and how thin those bucky balls are, those nanotubes that very very thin indeed.

那么就让你有个概念，这些巴克球到底有多小，多薄，那些碳纳米管的确非常非常薄。

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