These crystals grow from water particles in cold clouds.

VOA: special.2010.01.05

like we're going to get really wet from the clouds and I will need my umbrella.

就好像云里会渗出雨水一样。我得带上我的伞。

I wonder if 实战 - SpeakingMax英语口语达人

The challenge is to pick out oil from other dark spots, such as shadows made by clouds or patches of seaweed.

VOA: standard.2010.07.05

Fake clouds, projected from another machine, fluttered overhead.

VOA: standard.2010.02.25