For example, they don't take into account the gas convecting for hundreds of thousands of kilometers.

例如，他们没有考虑到成百上千千米的气体对流。

The different conditions inside them means the material in them doesn't convect, the hot stuff doesn't rise away from the core.

这它们内部的质不会对流，热的质不会从地核上升。

The liquid convects, and this motion generates magnetic fields, similar to the way plasma in the Sun generates magnetic fields.

这些质的对流会产生磁场，类似于太阳中的等离子体产生磁场的方式。

Thunderstorms tend to peter out as the night goes on, when temperature differences across the atmosphere aren't quite extreme enough to keep air pockets violently convecting.

随夜晚的继续，雷暴往往会逐渐消失，因为大气之间的温差还没有大到足以让气团剧烈对流。