They were in seventh heaven. They were on cloud nine.

他们简直非常愉(in seventh heaven)，若狂(on cloud nine)。

Cloud storages are also prone to hacking.

云存储也容易被黑客攻击。

The sky is overcast with clouds and the rain is ceaseless.

云雾遮满天空，雨也不停地下。

Dark clouds are often treated as precursor of a storm.

乌云通常被当作暴风雨的前兆。

Sometimes dark clouds have silver linings.

有时山穷水尽，但总会柳暗花明。

They can also track changes in the climate by measuring the clouds.

他们还可以通过测量云层来追踪气候的变化。

The wind blows away the clouds and sky is clear.

风把云吹散，天空变得明朗。

The lecture was on cosmic gas clouds. That's funny!

那个演讲是关于宇宙气体云的。多有趣啊!

In retrospect, clouds were gathering on the horizon.

回想起来，乌云已经开始在地平线上集结了。

The answer is that we don't yet understand aerosols and clouds well enough.

答案是，我们尚未能够了解气溶胶与云层。

We may never see what's beneath those majestic clouds.

我们也许无法看到在那些宏伟的云层下面有什么。

You saw the little flower burst open, and a cloud rose, you say, like enchantment.

你看到了小花的绽开，一片玫瑰色的云雾，你说像有魔力一样。

Clouds drifted across the sky in endless procession, partially hiding the stars.

云不绝地依次在天空里荡过，隐失了些许的星星。

A black cloud was rising from the shattered summit of the mountain.

一股黑色的烟云从炸开的山顶升起，越升越高。

The absence of the leaders could cast a cloud over the summit.

这些领导人的缺席可能会为本届峰会蒙上一层阴影。

Holmes's emotions begin to cloud his judgment.

福尔摩斯的感情渐渐蒙蔽了理智。

Clouds were obscuring the moon completely.

浮云把月亮完全遮住了。

As the ash cloud drifted east over the island nation one airport was temporarily closed.

随着火山灰向印尼东部飘流，一个机场被暂时性关闭。

It sent a thick cloud of ash several miles into the air.

喷发出的浓厚的烟雾冲上几英里以上的高空。

To say that it is overcast means that the clouds are covering the sky.

说 overcast 的意思是说有很多云遮盖了天空。