volcanic mountain短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 un.火山;🌏火山岳;火山上 Seattle, Los Angeles and San Francisco, all in the US, round out the top5 with each sitting on an active tectonic boundary or near a sleeping volcanic mountain. 后3座城市都位于美国,分别是西雅图、洛杉矶和旧金山,它们或处于板块交界处,或紧邻休眠火山。 www.chinadaily.com.cn