n.火山口( crater的名词复数 )；弹坑等； 双语释义：n.(名词)[C]火山口 the bowl-shaped mouth of a volcano[C]弹坑等 a hollow made in the ground by a bomb,etc.英英释义： cratern.a bowl-shaped geological formation at the top of a volcano同义词：volcanic cratera faint constellation in the southern