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来源:雅诚德英语网
Also known as M20, it lies about 5, 000 light-years away toward the nebula rich constellation Sagittarius.
它也被称为M20,位于5000光年之外有着丰富星云的人马座方向上。
Also known as M20, it lies about 5, 000 light-years away toward the nebula rich constellation Sagittarius.
它也被称为M20,位于5000光年之外有着丰富星云的人马座方向上。