The earth without animals, like the blue sky without clouds.

地球没有了动物，就如蓝天没有了白云。

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Schools in the sky is still blue without impurities, even the clouds are few.

学校的天空依然是不带杂质的蓝，连云彩都很少。

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Schools in the sky is still blue without impurities, even the clouds are few.

学校的天空依然是不带杂质的蓝，连云彩都很少。

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