雨来自于云，云的种类有很多。

Rain comes from clouds. There are many kinds of clouds.

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这个问题的答案取决于云的定义。

That depends on how you define the cloud.

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这些测量数据依托于云体形成的模拟模型。

The data was supported by model simulations of cloud formation.

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The Clouds was written in 423 when Socrates was in his mid-forties and the Aristophanic Socrates is essentially what we call a natural philosopher.

云》剧写于公元前423年3,当时苏格拉底约45岁,亚里斯多芬尼斯时的苏格拉底,基本上就是我们所谓的自然哲学家。

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