adj.迅速消失的；短暂的
Opinions are easily formed, but are as evanescent as ice in August. 看法很容易形成,但却会像8月的冰雪一样很快消融。
The joy and moral stimulation of work no longer must be forgotten in the mad chase of evanescent profits. 务必不能再忘记劳动带来的喜悦和激励，而去疯狂地追逐那转瞬即逝的利润。
The evanescent post-war economic boom was quickly followed by a deep recession. 大萧条紧随短暂的战后经济繁荣而来。
