学校的天空依然是不带杂质的蓝，连云彩都很少。

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

youdao

学校的天空依然是不带杂质的蓝，连云彩都很少。

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

youdao