由于这个原因,它们同时又被称为跳跃基因。
仙女星系是距银河最近的巨型旋涡星系,它以其所在星座仙女座命名,同时又被称为M31,它是本星系群中最大成员。
The nearest major spiral galaxy to the Milky Way, Andromeda, named after its constellation and also known as M31, is the largest galaxy in the Local Group of Galaxies.
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