n. 云彩，白云（cloud 复数形式）
v. 使暗淡（cloud 的第三人称单数形式）；使布满阴云
1.Clouds had come down and it was starting to drizzle.
云压了下来，开始下起了毛毛雨。
2.The dark clouds in the sky meant that a storm was coming.
天空中的乌云预示暴风雨即将来临。
3.Lightning is caused by clouds discharging electricity.
闪电是由云层放电产生的。
4.Clouds enveloped the mountain tops.
云雾笼罩着山顶。
5.The clouds glowed like burnished gold.
云层发出金色的光芒。
6.Clouds blotted out the sun.
云遮住了太阳。
7.The sun peeped out from behind the clouds.
太阳从云层里露了一下脸。
8.The clouds thinned and the moon shone through.
云层渐稀，透出了月光。
9.The plane nosed down through the thick clouds.
飞机穿透厚厚的云层慢慢向下降落。