There are several layers of clouds many kilometers thick composed of sulfuric acid.
有几个层次的云彩多公里厚的组成硫酸。
After the rain when it is sunny again, layers of clouds make the sky look very beautiful.
雨过天晴，层层云锦把天空点缀得很美丽。
Kelvin-Helmholtz wave clouds are formed when there are two layers of air moving at different speeds and in opposite directions.
当两层空气以不同的速度、相对的方向移动时，便形成了开尔文一亥姆霍兹浪状云(Kelvin - Helmholtz)。
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