星系盘 xīngxìpán galactic disc Definitions Defs Origin Strokes Stroke Words Sentences Sents 星系盘 星系盤 xīngxìpán galactic disc The flattened, rotating region of a galaxy that contains stars, gas, and dust
星系盘 星系盤 xīngxìpán galactic disc The flattened, rotating region of a galaxy that contains stars, gas, and dust
