And there's one final layer above that: the ethereally thin corona, sort of like the Sun's atmosphere.

更加稀薄的日冕层，有点像太阳的大气层。

As I'll cover in more detail in a future episode, the corona is the sun's atmosphere, an ethereally thin envelope of gas that stretches from the Sun's surface into space for millions of kilometers.

日冕是太阳的大气层，我将在以后的章节中更详细地介绍，日冕是一层空气般稀薄的气体，从太阳表面延伸到几百千米外的太空中。