This flat circular disk is our own Galaxy, the Milky Way, with its spiral structure.
This flat circular disk is our own Galaxy, the Milky Way, with its spiral structure.
这个圆盘就是我们的星系，银河系，带着旋涡的结构。
This flat circular disk is our own Galaxy, the Milky Way, with its spiral structure.
这个圆盘就是我们的星系，银河系，带着旋涡的结构。