It's like looking up in the sky: Sometimes you feel a breeze coming from the south, but you look up in the sky and see a layer of clouds moving east, and another higher layer of clouds moving west.

就好比观测气象：有时侯，你察觉一阵轻风从南方吹来，然而抬头观天，看见一个云层在朝东移动，另一个更高的云层在朝西移动。

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It's like looking up in the sky: Sometimes you feel a breeze coming from the south, but you look up in the sky and see a layer of clouds moving east, and another higher layer of clouds moving west.

就好比观测气象：有时侯，你察觉一阵轻风从南方吹来，然而抬头观天，看见一个云层在朝东移动，另一个更高的云层在朝西移动。

youdao