精选优质文档-倾情为你奉上U5(选修六)1 volcano n. 复数volcanoes火山an active volcano活火山an extinct volcano死火山a dormant volcano休眠火山volcanology火山学volcanologist火山学家pianist钢琴家physicist物理学家Novelist小说家2. erupt1)（火山）爆发，喷发Mount Vesuvius hasnt erupted for a good many years. 维苏威火山已经多年没有爆发了。2)（搏斗，暴力事件，噪音等）突然发生，爆发Violence in street can erupt for no apparent reason. 街头暴力可以在没有明显原因的情况下爆发。erupt into laughter/shouting/crying, etc.突然大笑/叫喊/大哭He erupted into laughter without any reason. 他毫无理
