a futile effort

常见例句

A futile effort, too: Beijing won the games, and some would say the argument.
有人说：“北京赢得了奥运会（比赛games，又译游戏）”，这么说也只是无稽之谈。
Last year it proposed tax incentives for companies to turn temps into regular employees—a futile effort when profits are scarce and jobs being slashed.
去年日本政府提出通过优惠公司企业税鼓励它们将临时员工转为“普通”雇员——在利润少的可怜的情况下企业必将裁员，此举可为无用功。
Affirmative won't, stationmaster people an end that sees you, although do not come out your T, your promotion also is make a futile effort !
肯定不会，站长们一眼就看出你的目的了，即使不把你T出来，你的推广也是徒劳无功啊！

Cambara waits for him to push the door shut, which he does with a squeak, and she watches him as he turns the wobbly handle a couple of times in a futile effort to secure it, notwithstanding its state of malfunction.
NPR: Somalia's Farah: Humanizing a Broken Place
At this point, I recalled a long-ago futile effort to unclog my junk e-mail account.
FORBES: No E-mail About Your Borders' Shopping History Being Sold? (Or, How Privacy Protection Measures Can Backfire)
But the drive for sanctions has been a frustrating and some say futile effort.
NPR: U.S. Intelligence Report Complicates Iran Debate