M101也被称为风车星系，位于大约2500万光年之遥的大熊星座北部边缘。
Also known as the Pinwheel Galaxy, M101 lies within the boundaries of the northern constellation Ursa Major, about 25 million light-years away.
其中一个结果就是被称为风车星系的M101内有数个极度明亮的恒星形成区域(也被成为HII区域)分布在星系的旋臂上。
One result is that M101, also called the Pinwheel Galaxy, has several extremely bright star-forming regions (called HII regions) spread across its spiral arms.
这个不幸的、被破坏的星系可能曾经看起来更像我们的银河系，一个风车形状的星系。
The hapless, mangled galaxy may have once looked more like our Milky Way, a pinwheel-shaped galaxy.
这个不走运被撕扯的小星系可能曾经就像我们的银河系，形似风车。
The hapless, mangled galaxy may have once looked more likeour Milky Way, a pinwheel-shaped galaxy.
暗尘线跟踪的漂亮螺旋臂和蓝色星簇曾给了这个星系广受流行的名字-南部风车。
Prominent spiral arms traced by dark dust lanes and blue star clusters lend this galaxy its popular name of the Southern Pinwheel.
也就是说，迄今所进行过的最大规模的银河结构分析显示，我们的星系其实并非一个风车磨坊般转动的螺旋。
To wit: the most comprehensive structural analysis of the galaxy ever conducted indicates that ours is not a run-of-the-mill spiral one after all.
也就是说，迄今所进行过的最大规模的银河结构分析显示，我们的星系其实并非一个风车磨坊般转动的螺旋。
To wit: the most comprehensive structural analysis of the galaxy ever conducted indicates that ours is not a run-of-the-mill spiral one after all.
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