But here are a few things you can do to make their appearance more likely.

但是你可以做一些事让他们出现的更频繁些。

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For another, their appearance will make paper-waste less.

另一方面，它们的出现减少了纸张浪费。

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For another, their appearance will make paper-waste less.

另一方面，它们的出现减少了纸张浪费。

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