futile

adj.

无效的，无用的；没有出息的；琐碎的，无关紧要的；一场空

1. Pace considers attempts at timing futile.
   贝斯认为企图控制时间是无效的。
2. We are the Borg, Earth assimilation is inevitable, Resistant is futile!
   我们是博格，地球将被同化，抵抗是无效的！
3. 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。
4. 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。

Prodrug research: futile or fertile?
Futile Recanalization in Mechanical Embolectomy Trials
Patients' rights bills and other futile gestures.
IS FIDELITY FUTILE? THE ‘TRUE’ SIGNAL IS ILLUSORY, ESPECIALLY WITH ULTRASOUND
Futile transmembrane NH4+ cycling: A cellular hypothesis to explain ammonium toxicity in plants
Cohort Analysts' Futile Quest: Statistical Attempts to Separate Age, Period and Cohort Effects
Oral vasoactive medication in intermittent claudication: utile or futile?
Stochastic amplification and signaling in enzymatic futile cycles through noise-induced bistability with oscillations
Occurrence and predictors of futile recanalization following endovascular treatment among patients with acute ischemic stroke: a mul...
Samoilov, M., Plyasunov, S. & Arkin, A.P. Stochastic amplification and signaling in enzymatic futile cycles through noise-induced bi...