当雨云移动时，降雨的化学成分略有变化。
The chemical composition of rainfall changes slightly as raid clouds move.
降雨的化学成分随着雨云的移动而发生轻微变化。
The chemical composition of rainfall changes slightly as rain clouds move.
天边出现了暴雨云。
大型热带雨林的湿气有助于雨云的形成，而这些雨云会飘到需雨国家。
The humidity of large rainforests contributes to the formation of rainclouds that may travel to other countries in need of rain.
一朵积雨云所含的水有多重呢？
烟雾阻止雨云形成，火焰于是越窜越高。
It also stops rainclouds forming, so the flames burn higher.
积雨云上升到空中，通常会带来暴风雨。
A cumulonimbus cloud rises high into the sky and usually produces storms.
当雷雨云笼罩了风筝之后。
这些壮丽的冷氢云颇似夏日午后的积雨云。
These great clouds of cold hydrogen resemble summer afternoon thunderheads.
有大火行程的雷雨云。
These fire-provoked thunderstorm clouds are known as pyrocumulonimbus clouds.
为什么滚滚的天雷，黑色的暴雨云能够产生闪电？
Why do the roiling, black clouds of a thunderstorm produce lightning?
不光是作物，就连农民的家庭收入和营养也全赖那些雨云。
Not only crops, but also family income and nutrition are at the mercy of rain clouds.
突然之间，狂风大作，晴朗的天空因为暴风雨云而暗下来。
Suddenly, the wind started blowing, and the clear sky blackened with storm clouds.
闪电，是一种在雨云之间或者雨云与地球之间肉眼可见的放电形式。
Form of visible electric discharge between rain clouds or between a rain cloud and the earth.
关于强降雨，由于空气的流动作用，是积聚多地区的雨云，集中生成。
Concerning strong rain, because of the fluxion function of air is rain cloud that accumulates to gather many regions, concentrated born.
高积云是紧紧地交织在一起的小积云。这些雷雨云常常使大地一片昏暗。
Altocumulus clouds are small cumulus clouds that are knitted tightly together. These storm clouds often darken the land.
《罗夏云群》观察了一种被形容为“一片积雨云的浅表观察”的气候现象。
Rorschach Clouds observes the meteorological phenomena described as' Surface observation of a single cell cumulonimbus'.
沙滩上有了欲来的雨云的阴影，云雾低垂在丛树的绿线上，像你眉上的浓发。
Thee shadow of the coming rain is on the sands, and the clouds hang low upon the blue lines of the trees like the heavy hair above your eyebrows.
天空要么全阴，要么就是蔚蓝的天空上孤零零飘着一朵云，而那朵云也是雨云。
Either the sky is completely overcast, or the sky is blue with one single cloud and that cloud is raining.
在这一阶段，我着重天空的刻画，通过添加一些雨云来制作些戏剧性和趣味性。
At this stage, I put more work into the sky adding some storm clouds to create both drama and interest.
这些辛普森称之为“热塔”的积雨云，对于热带海洋上暖湿的上升空气起着烟囱一样的作用。
These cumulonimbus clouds, which Simpson called "hot towers," act like chimneys for the warm, moist air rising from the tropical oceans.
他仅仅看了它几秒便被一片雷雨云挡住了视野。接着飞船便沉入一片灰色阴暗天空。
He sees it for only a few seconds before a thunderhead blocks the view, and the shuttle plunges into gray murk.
最近降雨云增多——可能是人工干预的结果——增强了人们对雨季终于来临的希望。
Recent cloudbursts – some precipitated by weather-modifying techniques – have raised hopes that the rainy season may finally have arrived.
那么一块儿比“蓬松的”积雨云大10倍的暴风云中含有的水相当于多少只大象呢？
So how many elephant units of water are inside a big storm cloud … 10 times bigger all the way around than the "puffy" cumulus cloud?
气象部门的发言人说，“只有在大面积的积雨云汇聚的时候，这么强大的暴风雨才会出现。”
A spokesman for the Met Office said: 'Storms of this intensity only occur with large towering cumulonimbus clouds.'
艾凡：下次吧。看到那些云了吗？它们看起来像是积雨云。我想我们最好回车上去。
Next time. See those clouds? They look like thunder heads. I think we'd better head for the car.
雨云是怎样被充电尚未完全被了解，但是大部分的雨云在底部充以负电在顶部充以正电。
How rain clouds become charged is not fully understood, but most rain clouds are negatively charged at the base and positively charged at the top.
雨云是怎样被充电尚未完全被了解，但是大部分的雨云在底部充以负电在顶部充以正电。
How rain clouds become charged is not fully understood, but most rain clouds are negatively charged at the base and positively charged at the top.
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