1·I picnic by an extinct volcano every week.
我每周在一座死火山旁野餐。
2·Lest you should ever forget the smallness of being human, the iconic Mount Fuji, instantly recognisable yet somehow different on every viewing, is an extinct volcano.
唯恐你会忘记作为人类的渺小，标志性富士山，一眼即能认出但不知何故每次观看又呈现出不同景象，就是一座死火山。
3·The extinct volcano's eruption would mean a cataclysm for the city.
死火山又重新喷发，对这座城市来说意味着大难临头。
4·There were two active volcanoes, one extinct volcano and some flowers on it.
那里有两座活火山、一座死火山和一些花儿。