1. The plane is flying above the clouds.
    飞机飞于云上.

2. There are some clouds in the sky, but the sun is shining.
    天空中有些云彩.但阳光灿烂.

3. The moon was obscured by clouds.
    月亮被云遮住了.

4. These clouds are ominous. They portend a severe storm.
    这些云是不祥的预兆, 预示着一场大风暴即将来临。

5. The sky became suddenly overcast with clouds.
    乌云密布, 天空突然暗下来。

6. Those clouds presage a storm.
    那样的密云预示著暴风雨将要来临.

7. There are some clouds in the sky, but the sun is shining.
    天空中有些云彩.但阳光灿烂.

8. Travelling at a height of 30,000 feet, far above the clouds, and at over 500 miles an hour is an exhilarating experience.
    腾云驾雾，在30，000 英尺高空以500英里的时速旅行，这种经历令人心旷神怡。

9. There are some clouds in the sky,
    天空中飘着几朵云，

10. The wind had brought dark clouds and heavy rain, so it was impossible to take a walk.
    风卷乌云，大雨倾盆，出去散步是不可能了。