云的单词：cloud；

cloud通常用作不可数名词，但在作“云块，片云”解时可用作可数名词，且可用不定冠词a来修饰。

例句：

The day dawned sunless and with a low cloud base.

黎明时天气阴沉，云层压得很低。

The cloud is above the tree.

云在树的上面。

相关介绍

The cloud is shaped like a fish.

那片云形如一条鱼。

The cloud is not smoke or steam.

云不是烟或蒸汽。

I wish I were a white cloud.

但愿我是一片白云。