撞击坑 meaning in English

impact crater

Impact craters have some special features , for example , there are some ray systems and central mountains
撞击坑典型的特徵包括辐射纹和坑中心的小山丘。
That indicates that scattered rocks associated with young impact craters are more likely the causes of the high cpr
这表明与年轻的撞击坑相关的散布碎石很可能是高cpr的原因。
Many scientists believe that a massive asteroid , large enough to leave a crater over 300km in diameter , was the cause while others believe that the gradual shifting of the continents and mammalian competition are to blame
许多科学家相信，那是一块大到足以留下一个300千米直径撞击坑的小行星碎片引发了这场灾难，而另外一些人则归咎于大陆的漂移和哺乳动物的生存竞争。