He tried and tried but without success.

他反复尝试，但没有成功。

《牛津词典》

We have made representations to the prime minister, but without success.

我们同首相进行交涉，但没有效果。

《牛津词典》

Both plans have been tried, but without success.

两个办法都试了试，但没有成功。

《新英汉大辞典》

For months,American forces tried without success to find him.

VOA: special.2010.07.29

Name me a modern American president who won the presidency without at least some success in the states of the old Confederacy.

谁能告诉我现代哪一位美国总统,能够在失去南方诸州支持后,还能赢得总统大选的

耶鲁公开课 - 美国内战与重建课程节选

But focusing on things that are sustainable and scalable so that when we launch more schools or go into the next market or whatever we do, we're going to set ourselves up to have the same success that we've had without hurting our self in the current position.

还要关注可持续发展的事物,以及规模容易扩大的事物,当我们向新的学校扩展时,或是进军新市场时，目标就是获得,跟以前一样的成功,并且不破坏现有的水平。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

The government has offered to begin peace talks with the rebels, but without success.

NPR: Suspected Rebels Kill 24; India Officials Outraged

Several US politicians have called for the marketplace to be shut down, without success.

BBC: Silk Road screenshot

Scotland coach Craig Levein had tried to persuade the 32-year-old midfielder to reconsider but without success.

BBC: Barry Ferguson decision pleases City boss Alex McLeish