at one gulp

例句：

1. 1.He decided to finish the project at one gulp.
   他决定一口气完成这个项目。
2. 2.They were all at one gulp.
   他们都在一鼓作气。
3. 3. The team worked together at one gulp to solve the problem.
   团队齐心协力，一鼓作气解决了这个问题。