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- 闪电是由云层放电产生的。
Lightning is caused by clouds discharging electricity.
- 云层把风景遮住了。
Thick cloud blotted out the view.
- 太阳从云层后面露出来了。
The sun emerged from behind the clouds.
- 云层的构成方式有好几种。
There are several kinds of cloud formations.
- 云层正在堆积。
Clouds are banking up.
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