Let's start with a very simple white puffy cloud - a cumulus cloud.

让我们先从一团很普通的蓬松的白色积雨云算起.

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Let's start with a very simple white puffy cloud - cumulus cloud.

让先从一团很普通的蓬松的白色积雨云算起.

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How much does the water in a cumulus cloud weigh?

一朵积雨云所含的水有多重 呢 ?

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