adj.无效的；无用的
Pace considers attempts at timing futile. 贝斯认为企图控制时间是无效的。
It is futile to attempt to convince him that certain things are simply undoable. 使他相信某事情是完全不可为的是无用的尝试。
Any unrealistic objective is not worth pursuing sedulously since it is doomed to a futile project. 任何不现实的目标不值得去辛苦地追求因为它注定是无用的计划。
adj.无效的；无用的
