n.光球...

The photosphere has a granular structure.光球还有颗粒结构。The chromosphere is a frothy layer churned up by gases in the photosphere.色球层在光球层气体的搅拌下是个多泡层....

photosphere的音标：photosphere的英式发音音标为：['fəʊtəsfɪə]photosphere的美式发音音标为：['fotəˌsfɪr]...