chromosphere

After that is the chromosphere, a layer that looks reddish because of all the hydrogen found there.

再之外是色球层，这一层由于存在的氢元素而略呈红色。

The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona.

太阳大气则由光球层、色球层、过渡区和日冕组成。

A star during most of its life is a main-sequence star, which consists of a core, radiative and convective zones, a photosphere, a chromosphere and a corona.

一颗恒星其生命的绝大部分处于主序星阶段，在这一阶段它包含一个核心、辐射区和对流区、光球层、色球层和日冕。