At the dentist's, he hovered near the ceiling. As a test pilot, he found secret spaces in cumulus clouds.

在牙科诊所，他盯着天花板发呆。当试飞员时，他在积云中发现了秘密空间。

Clouds formed this way are called cumulus clouds, or cumulonimbus clouds, and they usually lead to very heavy rain, often with thunder and lightning.

这样形成的云被称为积雨云，它们通常会导致大雨，还经常伴有电闪雷鸣。

Cumulus clouds, for example, get their start when solar energy evaporates water from oceans, plants, and soil by breaking the bonds that hold water molecules together.

例如积云，开始时阳光的能量切断水分子间的连结，让海洋、植物和土壤中的水蒸发。

Here, we're talking about big vertical columns of air yanking planes up and down, hail, foreboding cumulus clouds… stuff you don't wanna fly through.

这里，我们谈论的是巨大的垂直气柱， 使飞机上下摇晃，冰雹，令人不快的积云...... 这些都是你不想飞过的。

A high, whispy cirrus cloud that descended and spread into a sheet was named cirrostratus, while groups of fluffy cumulus clouds that joined up and spread were named stratocumulus.

原本在高空中的纤薄的层云下降并且扩散成薄片状，被命名为卷层云。由大量蓬松的积云聚集并扩散而成的，则命名为层积云。

The heavily voluted cumulus clouds lower gloomily and threateningly; they wear that implacable look which I have sometimes noticed at the outbreak of a great storm.

浓密的卷云阴沉而充满威胁地低垂着。他们表现出一种无情的表情， 我有时会在一场大风暴爆发时注意到这种表情。

The last mile of its course lies between the sides of sunken domes and swelling folds of the granite that are clustered and pressed together like a mass of bossy cumulus clouds.

它路线的最后一英里位于凹陷的圆顶两侧和花岗岩的膨胀褶皱之间，花岗岩像一团专横的积云一样聚集并压在一起。