多云天空的英文：
cloudy sky

cloudy是什么意思：
adj. 阴天的；含糊的；浑浊的；愁容满面的

not made opaque or cloudy by sediment.
没有被沉淀物弄得不透明或者混浊。

The legal position is very cloudy.
法律对此的态度十分模糊。

It is an absurdly cloudy political debate.
这是极为含糊不清的政治辩论。

It was so cloudy that the top of the mountain was invisible.
天很阴，看不见山顶。

They cannot concentrate the diffused sunlight of cloudy days
它们不能收集多云天的散射阳光。

sky是什么意思：
n. 天，天空

The sky is clearing.
天正明朗起来。

Sky is louring.
天空正变得阴沉。

After the storm the sky cleared.
暴风雨过后，天空明朗了。

And then, in the late afternoon the sky will clear,
然后，下午晚些时候天空变晴，

Stars glittered in a clear sky.
星星在晴空中闪烁。