cloud

There was so much cloud, we couldn't see anything.

云层太厚，我们什么也看不见。

On the eastern horizon, a huge cloud of smoke from burning oil tanks stretched across the sky.

在东方的地平线上，着火的储油罐冒出的浓烟弥漫在天际。

All the photographs are kept on the cloud rather than on hard drives.

所有的照片都存在网络云里，而不是硬盘上。