extinct；extinction是什么意思啊?如何背?
问题描述：
extinct；extinction是什么意思啊?如何背?
答
adj.熄灭的,灭绝的,耗尽的vt.使熄灭an extinct species已灭绝的物种an extinct volcano死火山a fashion long extinct早已过时的式样Many animals and birds are now extinct.许多鸟兽现已绝种.All hope was extinct....