They load a rocket and launch it into the belly of a thundercloud.

他们装载火箭，把它发射到雷雨云中。

We know that if thunderclouds are forming overhead, it's probably a good idea to stay inside.

如果头顶上正在形成雷云，那么呆在室内会更好。

The thundercloud had so darkened the room that she could not very clearly see what was in it.

雷雨云让屋子变得非常昏暗，她看不清楚里面的东西。

But Monsieur, he was like a thundercloud all day!

但是先生，他整天像个雷雨云！

Ben believed that electricity in thunderclouds could cause lightning.

本相信雷雨云中的电流会引起闪电。

He plans to test this more manageable system on live thunderclouds next summer.

他计划明年夏天在现场雷雨云上测试这个更易于管理的系统。

It was believed until not long ago that lightning from a thundercloud always moves down heading in the direction of the earth.

直到不久以前，人们还相信雷雨云产生的闪电总是朝着地球的方向向下移动。

The looming thundercloud and the expectant ground below thus set the scene for a powerful discharge-- a lightning bolt.

迫近的雷雨云和下面期待的地面，为一次强大的放电——一道闪电——创造了场景。

Chapter 2: Setting the Atmospheric Stage The stage for the lightning show is set in a thundercloud.

第二章：设置大气舞台 闪电表演的舞台设置在雷雨云中。

According to the U.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。