The highest flying clouds here are cirrus clouds which can be found at altitudes of 20,000 to 40,000 feet.

这里最飞行云是云，可以在2万到4万英度找到。

Slender sheaves of cirrus clouds were followed on the horizon by layers of nimbocumulus. Other low clouds fled swiftly.

天际边一层层散开云后面，紧随团团乌云，还有一些低云飞快地掠过。

On any given day odds are you'll see several contrails, some slowly spreading out to form high, cirrus clouds.

每天我们都有机会看到航迹云，有些会慢慢散开形成空云。

The last new formation was cirrus intortus, added way back in 1951.

最后一个新形态是云，早在 1951 年就已添加。

AACPs are the wispy, cirrus clouds that form near the overshooting tops.

AACP是在超冲顶部附近形成纤细云。

Howard believed that all clouds belonged to three distinct groups: cumulus, stratus and cirrus.

霍华德认为所有云属于三个不同类别：积云、层云和云。

There were high cumulus clouds and enough cirrus above them so that the old man knew the breeze would last all night.

积云堆聚得很，上空还有相当多云，因此老人看出这风将刮上整整一。

There are five primary cloud types: stratus, cumulus, stratocumulus, cumulonimbus  and cirrus, each of which are subdivided into different genera based on altitude.

有五种主要云类型：层云、积云、层积云、积雨云和云，每种云都根据海拔度细分为不同属。

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.

原本在空中纤薄层云下降并且扩散成薄片状，被命名为层云。由大量蓬松积云聚集并扩散而成，则命名为层积云。

Storms that were strong enough to make these features--called above anvil cirrus plumes, or AACPs-- were also more likely to have severe tornadoes, large hail, and high winds.

足以形成这些特征风暴——称为铁砧云羽上方，或 AACPs——也更有可能产生强龙风、大冰雹和大风。

In fact, all clouds belong to one of three principle types to which Howard gave the names: cirrus, Latin for tendril or hair, cumulus, heap or pile, and stratus, layer or sheet.

实际上，所有云属于三种基本形式之一，霍德华给它们命名为：云，来自于拉丁语中须或头发，积云，堆积或积累，层云，层叠或片。

He looked at the sky and saw the white cumulus built like friendly piles of ice cream and high above were the thin feathers of the cirrus against the high September sky.

他望望天空，看见一团团白色积云，形状象一堆堆可人心意冰淇淋，而在上空，爽九月天空衬托着一团团羽毛般云。

His tail floats now behind him, now above him, level or gracefully curled like a wisp of cirrus cloud, every hair in its place, clean and shining and radiant as thistle-down in spite of rough, gummy work.

像一缕云一样水平或优雅地曲， 每一根毛发都各就各位， 干净、闪亮， 尽管经过了粗糙、粘稠工作， 但仍像蓟绒一样闪闪发光。