You use this mode for long tasks with no fixed number of steps.

对于非固定步数的长任务，可以使用这种模式。

youdao

For long tasks you will find yourself getting distracted by other things.

对于耗时长的任务，你会发现自己被其他的事情所分心。

youdao

We are always realistic with ourselves about how long tasks take, and if they take longer than normal, we start cutting tasks that are lowest priority.

我们应该客观实际的估计每项任务到底需要多长时间完成，如果他们比计划的花的时间长，我们就从最低优先级的任务开始取消任务。

youdao

Besides the actual performance, they look at how long it takes the soldiers to complete their tasks, since time can make the difference between survival or death for those who are lucky enough to be alive after the nuclear blast.

VOA: standard.2010.07.21

For 25 years high costs had confined fiber optics to handling long-haul tasks.

FORBES: Wired and Restless

Others cited bullying in the form of teachers being given impossibly long lists of tasks to do, or impossibly tight deadlines, denigrated in staff meetings - or simply being ignored.

BBC: Teachers in staff room

Padalka and Malenchenko also completed a long list of other tasks outside the station.

MSN: Spacewalker tosses out real-life 'Spaceball' - Technology & science - Space - Space.com | NBC News