He kept us hard at work but paid us well.他总让我们卖力工作，但给我们的薪水也很高。

We're at work on the new project.我们正在做那个新项目。

He has been out with a back injury, but he'll be back at work soon.他因背部受伤没来上班，但是他很快会回来工作。

She felt that a higher power was at work.她感到有种更大的力量在掌控局面。