It's rhymed iambic tetrameter, four beats per line, with some variations.

这是首押韵的短长体四音部句，一行四音，也有些变化。

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There are several variations that you can use to change this pattern slightly with basically the same meaning.

通过对句型做一些小的调整，我们可以有几种基本含义一致的变形。

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