他们一发狠，三天的任务一天就完成了。

With a determined effort, they finished the three-day task in a single day.

《新英汉大辞典》

我们现在的主要任务之一是实现农业机械化。

One of our main tasks now is to mechanize agriculture.

youdao

1977年发射的“旅行者一号”太空探测器发回了木星和土星的壮观图像，然后飞出太阳系，执行前往恒星的单程任务。

The space probe, Voyager I, launched in 1977, had sent back spectacular images of Jupiter and Saturn and then soared out of the Solar System on a one-way mission to the stars.

youdao

The challenge is for the work you are going to be doing at the class time we are doing to spend together.

这一挑战是针对,我们要一起在课上,完成的任务提出的。

麻省理工公开课 - 媒体、教育、市场课程节选

She starts at the beginning of her day and goes through task after task, chore after chore, project after project

她从一天的开始说起，从一个任务说到另一个任务，从一件杂活说到另一件杂活，从一个项目说到另一个项目。

It sounds like 课堂 - SpeakingMax英语口语达人

Each group needed a justification for saying how interesting the task was, but they each had a justification.

每一组都需要一个理由来说明,这个任务有多有趣，但他们各自有自己的理由。

耶鲁公开课 - 心理学导论课程节选