[气象]卷云

cumulus clouds───积云

Hills clouds───山丘云

Hills cloud───山丘云

Oort clouds───奥尔特云

billow clouds───[气象]浪云；波状云

circus troupe───马戏团

cumulus cloud───[气象]积云

The rare phenomenon is created by light reflected from ice crystals in high-up cirrus clouds.───而这个罕见现象是由于在位置较高卷云中的冰晶反射闪电而产生的。

TC4 project will generate new data on the icy cirrus clouds that are formed in the upper atmosphere by heat-driven, or convective, storm systems that coalesce over warm waters in the tropics.───TC4工程将研究出关于含冰卷云的各种资料，这种云层是在大气上层中通过受热量驱使或对流的暴风雨变化过程中形成的，而此暴风雨也是与热带暖水海洋上空的状况密切相关。

It will use radar, balloons and aircraft to look at the role of another sort of high-altitude cloud: cirrus clouds, which get spun off the tops of storms.───该工程将使用雷达、热气球与大气层飞行器来研究另一种高端云的作用，其名为卷云-它是在暴风雨出现时从其顶端意外形成的。

Perhaps we have had such an agreement: to be turned together to see cirrus clouds, the flowers bloom.───也许我们有过这样的约定：要一起去看云卷云翻，花开花落。

When viewed from the ground, bands of threadlike cirrus clouds often seem to emerge from a single point on the western horizon.───如果从地面观察，线一样的卷云构成的带像是从西边地平线出的一个点发出的。

It contains rolling green hills and a blue sky with stratocumulus and cirrus clouds.───它包含起伏的绿色山丘和层积云和卷云与蓝色的天空。

On Earth, NASA says, white wispy cirrus clouds are made of ice crystals.───美国航天局说，在地球上稀疏的白色卷云是由冰晶所组成的。

This site offers about 20 images of various cloud types, taken from space, including thunderstorms over Brasil, jetstream cirrus clouds.───该网站提供了大约20个取自空间的各种类型的云的图像，包括越过巴西的雷雨、急流卷云。

They are no different from the cirrus clouds that naturally form in that region of the atmosphere.───它们没有不同于大气中自然形成的卷云。

Pieces of thin, white cirrus clouds appear around the Great Dark Spot.

Cirrus clouds are composed of ice crystals.

On Earth, NASA says, white wispy cirrus clouds are made of ice crystals.

It contains rolling green hills and a blue sky with stratocumulus and cirrus clouds.

They are the first cirrus clouds seen on an outer planet.

The sky is clear blue, with a few cirrus clouds adding texture to what looks like a flawless blue canvas.

Analogous to a sundog or parhelion, the paraselene is produced by moonlight shining through thin, hexagonal-shaped ice crystals in high cirrus clouds.

Cirrus clouds are usually forerunners of a cold front.

Cirrus clouds are detached clouds that take the form of delicate white filaments, strands, or hooks.