众多撞击留下的深坑让我们的地球和月球表面坑坑洼洼，他们在向我们揭示，太阳系可能是个射击场，小星星和彗星像横飞的子弹一样不断地撞击着行星和他们的卫星。
The many impact craters that have and Earth reveal our solar system can be like a shooting gallery, with asteroids and comets regularly striking planets and their companions.
众多撞击留下的深坑让我们的地球和月球表面坑坑洼洼，他们在向我们揭示，太阳系可能是个射击场，小星星和彗星像横飞的子弹一样不断地撞击着行星和他们的卫星。
The many impact craters that have and Earth reveal our solar system can be like a shooting gallery, with asteroids and comets regularly striking planets and their companions.
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