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汉语拼音：léi yǔ yún

1.云的一种﹐由积云发展而成﹐顶部向上突起作峰状或塔状﹐云底乌黑色。在雷雨到来之前就出现这种云。也叫积雨云。

1. 云的一种，由积云发展而成，顶部向上突起作峰状或塔状，云底乌黑色。在雷雨到来之前就出现这种云。也叫积雨云。

• He sees it for only a few seconds before a thunderhead blocks the view, and the shuttle plunges into gray murk.

  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。

• These fire-provoked thunderstorm clouds are known as pyrocumulonimbus clouds.

  有大火行程的雷雨云。

• The researchers used their laser pulses to rip away negatively charged electrons attached to molecules in the air around thunderstorms.

  研究人员用他们的激光脉冲从雷雨云附近的空气分子中剥离出电子来。

• A fascinating piece of evidence supporting runaway breakdown inside thunderclouds came from our experiments at the ICLRT last summer.

  去年夏天，我们在ICLRT进行的实验，得到了一项迷人的证据，可支持雷雨云内部有逃逸崩溃现象。

• There's also an onboard weather radar that sends out radio waves ahead of the plane looking for storm clouds.

  飞机还配备一台机载气象雷达，通过其向前方发射无线电波，侦测雷雨云。

• The lovers chased each other around ladders and balconies, and fairies covered the walls with hearts and thunderclouds scribbled in chalk.

  情人们围着木梯追逐打闹，在阳台上谈情说爱，仙子们用粉笔在墙上圈画着一个个爱心和雷雨云。

• stands high and white -- so white, indeed, that when there is a thunder-cloud behind it, it seems a thing of polished aluminium.

  这座风车又大又白——而且白得很厉害，每当雷雨云绕到它的背后时，整个风车就光亮的如同铝制的一样。

• A tornado is a fast rotating column of air extending from thunder clouds to the ground.

  卷风是一快速旋转的气团，自雷雨云伸展至地面。

• thunder clouds forming in the distance

  远处出现的雷雨云*