Suppose that most times and most activities were death free, but certain activities introduce the possibility of dying.

假设大部分时间和大部分活动都是死亡免疫的，但某些活动,会引起死亡的可能性。

耶鲁公开课 - 死亡课程节选

In another example, you can use a "when" question in order to ask about the timing of a specific event.

在下面这个例子中，你可以用When 问句来询问一个具体活动的时间。

When 课堂 - SpeakingMax英语口语达人

What we are hearing were periods of quietness and periods of a lot of action potentials.

我们听到的是一段寂静,然后是可能出现很多活动的一段时间。

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Well, because it takes some time for these cellular events that I mentioned earlier to happen.

因为我之前提及的细胞活动,需要一些时间完成

耶鲁公开课 - 生物医学工程探索课程节选

If you look at the percent of time people in society were involved in various activities and broken into agriculture versus everything else, in ancient Egypt it looked like this.

如果你留意一下,人们从事各种社会活动的时间比例,被分为农业生产和其他活动两类,在古埃及,时间分配是这样的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Well, if that's right, then should we say that the pervasiveness of death, ubiquitousness of death-- the thing that I was earlier suggesting was oppressive-- wouldn't it really be nice to have a death-free time or a death-free location or death-free activities?

如果是这样的话，那我们是不是应该说死亡的普遍性，死亡的无处不在性-,这些我之前所说的特征是不对的-,如果有死亡免疫时间或者死亡免疫地点,或者死亡免疫活动岂不是很好吗？

耶鲁公开课 - 死亡课程节选

That is a maximum If you are sharing your time and energy during this period on Tuesday afternoons, or the arch-field don't work so think carefully about that.

让大家充分发挥自己的能力,如果每周二下午这段时间,你都有时间，精力也很充沛，就可以来上这门课，不过这样你就没时间参加实践活动了,所以请仔细考虑吧。

麻省理工公开课 - 电影哲学课程节选

It's a good long time till any kind of mental processing occurs at all.

这离精神活动的发生还有好一段时间。

耶鲁公开课 - 死亡课程节选

Obviously with this sort of partitioning of behavior, and activities, and effort, there's not a lot of time leftover for leisure, for development of new technologies and things like this.

显然,采用这样一种,行为,活动及精力的分配方式,自然不会剩下很多时间,用来娱乐,发展技术和改革创新

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选