秋天的天空

 

凉爽的秋天,天空一片晴朗.这是为什么呢?

原来,秋天的空气较冷,水分不容易被蒸发

秋天还常刮大风,风一来,空中的尘埃全被吹敖了.

因此,秋天的天空很晴朗

秋天的树叶

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About blueturtle7645

I love learning the Chinese language and reading about Chinese history and culture.
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