这项任务是开放性的，永远也完成不了。

This task is open-ended. It can never be finished.

youdao

由于截止日期较远的开放性的任务更容易被推迟而不是受到重视，选择短期任务，或者将工程分割为较小的、更明确的任务将会有用。

Since open-ended tasks with distant deadlines are much easier to postpone than focussed, short-term projects, dividing projects into smaller, more defined sections helps.

youdao