Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.

细胞生命期可以停止在细胞周期的某个点,并保持很长时间

耶鲁公开课 - 生物医学工程探索课程节选

A lot of these processed foods have very long shelf lives and therefore can be stored for long periods of time.

很多加工食品为了便于储藏销售,都有很长的保质期

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Relative to the whole market, It's well known that over periods of multiple decades the market has a tendency to go up.

是和整个市场相关的对吗，我们都知道经过几十年的时间周期,市场会有上涨的倾向。

麻省理工公开课 - 计算机科学及编程导论课程节选

We've got equal periods of suffering and doing slightly better and slightly better and slightly better equal periods of success and suffering.

两种生命所承受的痛苦相等,这种生命是变得越来越好,两种生命的成功和痛苦都相等。

耶鲁公开课 - 死亡课程节选

So war time periods were typically periods of great inflation and debasement of the currency.

所以，战争时期通常是,严重的通货膨胀,和货币改造的时期。

耶鲁公开课 - 金融市场课程节选

Moreover, the kids we have are vulnerable for long periods of time and require our resources.

而且，我们的孩子很长一段时间,易受伤害,我们需要保护它们。

耶鲁公开课 - 心理学导论课程节选

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。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Is it sustained periods of continuity?

还是一种耐久的持续性呢？

普林斯顿公开课 - 人性课程节选

He also shows, however, that normal politics is, itself, dependent upon extraordinary politics, periods of crisis, anarchy, instability, revolution, where the normal rules of the game are suspended.

然而他也同时了解到常态政治，本身有赖于破例政治，诸如危机，失序，不稳定，革命等时期，当游戏的常态规范,遭搁置。

耶鲁公开课 - 政治哲学导论课程节选

When these tyrannies take place, they last for different periods of time, but when the tyrant is removed, what follows after that is, there is never again in that town a one-man rule of any kind.

当僭主统治步入历史舞台,它走过了很多历史时期,但当它寿终正寝之后,在那座城邦里再也没有出现过,任何形式的独裁者了

耶鲁公开课 - 古希腊历史简介课程节选

Example, protein hormones are insulin which we've talked about before and glucagon, and growth hormone which we haven't talked about but that's very important during periods of life like adolescence, when rapid growth of your bones is occurring.

例如,我们以前讲过的胰岛素,还有胰高血糖素都是蛋白质激素,生长激素也是,尽管我们还没有讲过它,但它在人的青春期阶段,起着非常重要的作用,骨骼在此时期快速生长

耶鲁公开课 - 生物医学工程探索课程节选

We've probably had four major periods in American history of there's one other picture I wanted to put up.

在美国历史上,我们大约经历了四个时期,在我想贴的另一张图片上

耶鲁公开课 - 美国内战与重建课程节选

Listen, the two periods in American history 1945 1890 to 1945 The economy suffers 3 contractions of 5 percent, 15% 2 of 10, and 2 of almost 15 percent.

听好，美国历史上的两大时期,第一时期是从1890到5,经济遭受过三次紧缩率为5%的经济紧缩，两次10%，还有两次高达。

斯坦福公开课 - 经济学课程节选

I've given you the periods at the top of the chart: early Bronze Age; middle Bronze Age from about 2100 to 1550; we date the late Bronze age from about 1550 until 1200--the introduction of iron and the beginning of the Iron Age in 1200. Prior to that, the Bronze Age, which is divided into these three periods.

我在这个表格的顶端给你们列了一些时期：,早期青铜时代；中期青铜时代，从约公元前2100年到前1550年；,晚期青铜时代，从公元前1550年到前1200年，即铁器时代前页；,然后公元前1200年开始了铁器时代，在那以前，青铜时代分为那样三个时期。

耶鲁公开课 - 旧约导论课程节选

Now, we're going to go back to Roger Ibbotson at the School of Management. He did some path breaking work in terms of describing capital markets returns over reasonably long periods of time.

先讲回到管理学院的罗格·伊博森,所进行的开创性研究,描述了在相当长的时期内,资本市场的收益情况

耶鲁公开课 - 金融市场课程节选

It's not forever because it terminates after 2T periods of six-month interval each.

债券不是永续的,券息每六个月为一期,共支付2T期

耶鲁公开课 - 金融市场课程节选