本文介绍的最后一个重构方法也是最难以使用的方法：Change MethodSignature（改变方法的签名）。

The final refactoring considered here is the most difficult to use: Change Method Signature.

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它们难以使用，还占用了图书馆很大的空间。

They were difficult to use and took a lot of space in a library.

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什么被高估了、难以使用、或者恼人的？

What's overrated, hard to use, or annoying?

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它是轻量吗？它难以使用吗？或者它有一个很广泛的库？

And is it lightweight, hard to use, or does it have an extensive library?

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这里有一项“虽难以使用却很酷的”研究要报道。

Here's a study to file under "unworkable but very cool."

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这里有一项“虽难以使用却很酷的”研究要报道。

Here's a study to file under "unworkable but very cool."

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