这主要是个反复实验的问题。

It was largely a matter of trial and error.

《牛津词典》

这个人在经过反复实验后设计出了一种新的信件处理系统。

The man devised a new system for handling mails after experimenting many times.

youdao

通过反复实验，我自己发现这两个学派都不是最好的睡眠模式。

Through trial and error, I found out for myself that both of these schools are suboptimal sleep patterns.

youdao

So this is an experiment of using an online distance product to enrich what was from a content standpoint that our students recapped.

因此，这个实验,用网上远程产品充实了,同学们反复阐述的,内容观点。

麻省理工公开课 - 媒体、教育、市场课程节选

So I think it is important to keep this in mind and I'm gonna be coming back to this a number of times as we talk about the experiments we were doing at the Soen School of management.

你们要牢记这一点,因为之后,我们会谈到这个问题,做的实验时,我会反复提到这个内容。

麻省理工公开课 - 媒体、教育、市场课程节选

What they show was rats who went through the maze and went through the maze again and again, learned far less than rats who took time aside, chilled out a little bit after a maze, had more margarita.

他们的实验表明,接连不断反复进入迷宫的老鼠，比进行一次迷宫后，稍事放松，来点小酒的老鼠，学到的少得多。

哈佛公开课 - 幸福课课程节选