Detectives are talking to other witnesses in an effort to corroborate her confession. 侦探们正在与其他证人交谈，为的是证实她的供词。

I've made an effort to drink less tea and coffee. 我已经努力少喝点茶和咖啡。

The drivers made no efforts to check their vehicles. 司机们懒得对自己的车辆进行检查。

She was trembling violently, but with a determined effort of will she stopped. 她颤抖得厉害，但凭着坚强的意志力，她不再发抖了。

The man died despite the doctors' efforts to revive him. 尽管医生们尽力抢救，那个人还是死了。

a concerted effort by the nations of the world to protect our environment 全世界国家为保护我们的环境而作出的共同努力

The sheer physical effort of shopping is a burden to most of us. 单单购物所耗费的体力对我们大多数人来说就是个负担。

Writing a book requires a lot of time and effort. 写书需要大量的时间和精力。

Mary put a lot of effort into this project. 玛丽在这个项目上花了很大力气。

Nathan controlled his temper with an effort. 内森尽力控制自己的情绪。

As smiles went it was a poor effort. 尽管笑了，但笑得很勉强。