In the early 1960s, researchers tried firing rockets trailing wires into thunderclouds to set up an easy discharge path for the huge electric charges that these clouds generate.
在20世纪60年代早期，研究人员试图将火箭尾部的电线发射到雷云中，以便于为这些雷云产生的巨大电荷建立一个简单的放电路径。
S. National Weather Service, tornadoes form from thunderclouds and can reach swirling speeds in excess of 600 kilometers per hour.
根据美国国家气象局的资料，龙卷风是由雷雨云所形成，旋转速度每小时可高达600公里以上。
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。
In the atmosphere, static electric fields (also referred to as electrostatic fields) occur naturally, in fair weather, and especially under thunderclouds.
在大气中，静电场在晴天、特别是雷阵雨时自然产生。
They may be reacting to the fact that the air can become slightly positively charged when large thunderclouds are generating the intense eletrical fields .
他们之所以如此，可能是因为层层雷云产生了强烈的电磁场，空气也稍带正电荷。
They may be reacting to the fact that the air can become slightly positively charged when large thunderclouds are generating the intense eletrical fields .
他们之所以如此，可能是因为层层雷云产生了强烈的电磁场，空气也稍带正电荷。
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