a. 逐渐消失的, 容易消散的, 短暂的
[医] 易消灭的, 渐消失的, 挥发性的
s. tending to vanish like vapor
以上参考资料就是本词典详细汇总的词语evanescent是什么意思的翻译解释，如有错漏请向我们提供反馈意见。
As an art form, fire is evanescent and fleeting.
作为艺术的表现形式 火是短暂而稍纵即逝的
I think you'd have to say it has to do with his appreciation of the landscape as something that's not permanent but evanescent always,always in the process of becoming something else.
就要去理解他的欣赏角度 他认为那些风景 并非永恒不变 而是稍纵即逝 时刻都在发生变化