photosphere

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The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona.
太陽大氣則由光球?qū)印⑸驅(qū)?、過渡區(qū)和日冕組成。
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.
一顆恒星其生命的絕大部分處于主序星階段，在這一階段它包含一個(gè)核心、輻射區(qū)和對流區(qū)、光球?qū)?、色球?qū)雍腿彰帷?/li>
They are transient tangles in the sun’s magnetic field that are slightly cooler than their surroundings and so appear as dark patches in the photosphere—the surface layer of the sun.
它們是位于太陽磁場上暫時(shí)性的比周邊溫度偏低的混亂的一塊區(qū)域，也因此看起來就像光球——太陽表層上的暗斑。