现在咬住这个棉花团，一小时后把它吐掉。

Now bite on this piece of cotton and spit it out an hour later.

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在这里，我们可以用酒精泡过的棉花团或湿布清洗这些沉积物。

Here, we can use alcohol foam corporation or cotton cloth to clean these sediments.

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假设云朵实际上是由棉花糖团粘在一起形成的，这样人们就可以坐在它们上面，骑着它们。

Pretend that clouds are actually made of marshmallow clusters stuck together so that people can sit and ride on them.

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