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

更加稀薄冕，有点像大。

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.

冕是大，将在以后章节中更详细地介绍，冕是一空般稀薄体，从表面延伸到几百千米外空中。