Bright ejecta rays such as these are produced as impacts excavate and eject relatively unweathered subsurface material.
这些放射状陨石坑产生于天体撞击
地下物质，绵延在遍布陨石坑水星
面数百公里。
物；排泄物Bright ejecta rays such as these are produced as impacts excavate and eject relatively unweathered subsurface material.
这些放射状陨石坑产生于天体撞击地下物质，绵延在遍布陨石坑水星面数百公里。
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