Clouds are made up of small drops of water.

云是由小水滴组成的。

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The scientists say water drops form small balls on the new plastic.

科学家说，水滴在新型塑料上形成小球。

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Water falls from clouds in small drops. That is rain.

水从云里一滴一滴地落下，就是雨。

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Water falls from clouds in small drops. That is rain.

水从云里一滴一滴地落下，就是雨。

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