The experts say individual progress and not a set time period should always guide a decision to return to play.

VOA: special.2009.10.28

You've got to ask yourself, let the time it takes to do a full circle, that's the time period, do a full circle.

你已经问你自己了,留足够的时间让它运动一整圈,那就是运动整个圆周的时间周期

耶鲁公开课 - 基础物理课程节选

We're in a time period where the economy has changed dramatically in the last few years.

我们现在所处的时期在前几年经历了巨大的经济变化。

现在的商业新闻 - SpeakingMax英语口语达人

Others who want to graduate in three years must pay for the same education as four-year students, but in a shorter period of time.

VOA: special.2009.07.23

The time period and frequency are reciprocals.

周期和频率互为倒数

耶鲁公开课 - 基础物理课程节选

Nash studied the works of seven important painters who lived during a one hundred year period, a time frame similar to that of jazz.

VOA: special.2010.03.24

At this time, somewhere in this period, there was a transfer of power in the Canaanite pantheon from the older gods to younger gods.

在那段时间的某个地方,迦南众神的权利由年老的神向年轻的神过渡。

耶鲁公开课 - 旧约导论课程节选

When a baby's head is stuck in the birth canal for an extended period of time, it cuts off the blood supply to the woman's surrounding organs.

VOA: special.2010.08.09

I'm going to read passages quite a bit today, since some of you may not have been able to get the RIS packet in time, it being shopping period.

会怎样，可能有同学没拿到课件,我会多讲些，由于还没步入正轨。

耶鲁公开课 - 1945年后的美国小说课程节选

"And what happens is we have mazes and the children are able to organize the robots and see if they can get them through the maze within a certain time period."

VOA: special.2010.07.28

Clearly, important information is to be conveyed to students from people who settle in the fields for a long period of time.

显然，对某个领域,进行长时间研究的学者,会将重要的信息,传达给学生。

麻省理工公开课 - 媒体、教育、市场课程节选

So,to get a sense of what the regional moisture patterns have been, dryness and wetness over such a long period of time in great detail, I would call it a kind of victory for paleoclimate science."

VOA: special.2010.05.25

A cohort study means you take the same group of people and follow them every five years for that period of time.

定群研究意味着你只有一组研究对象,然后在研究期间每五年进行一次记录数据

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

It doesn't mean it's going to be easy. But,I think it can be over the period of time that we're talking about."

VOA: standard.2010.07.22

This is the present value of $1 in one time period, which I'm taking to be a year.

这就是一美元在一段时期内的现值,我只是将一美元持有一年

耶鲁公开课 - 金融市场课程节选

Now here are some differences: the older patients were given adjuvant chemotherapy in weaker doses and for a shorter period of time.

VOA: standard.2010.03.18

It was implanted into the first patient, a gentleman in Kentucky, and he stayed alive for a period of time with this device replacing his heart.

第一个植入这个人工心脏病人是,住在肯塔基州的一位先生,他在移植手术后,存活了一段时间

耶鲁公开课 - 生物医学工程探索课程节选

"And with regard to the burden of disease it more than doubled,it increased over that 16 year period of time about 127 percent."

VOA: standard.2010.08.10

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

He was very hurt by the strike, which shut down operations for quite a period of time."

VOA: standard.2010.02.26

The style of warfare that emerges in this period, apparently for the first time, is what we call the hoplite phalanx and each half of that needs to be explained.

显然,这个时期第一次出现了,一种独特的战争形式,那就是重步兵方阵,我来给大家分别解释下这两个词

耶鲁公开课 - 古希腊历史简介课程节选

His research shows that those taking the medications for more than four years have a higher risk of a fracture than people taking the drugs for a short period of time.

VOA: standard.2010.03.14

At the same time, I do mean to give you some sense of the period in which they're writing, some sense of modernism as a field, as one of the richest fields in English language writing.

同时，我也会给你们提供一些背景知识,来了解作者创作的年代，以及现代主义的思想领域，就其作为英语文学创作最丰富的领域之一而言。

耶鲁公开课 - 现代诗歌课程节选

Now,that has changed, for sure; but,the centralization of the French government and the domination of Paris over the life of the nation is very difficult to change, over a long period of time.

现在,情况已经发生了改变,但是法国政府的中央集权化,以及巴黎在国民生活中的支配地位,在相当时间段内,都很难得以改变

耶鲁公开课 - 1871年后的法国课程节选

And even if over a period of time the average amount of their regard is lower because they started lower and then got higher than someone who was always high, it's the ones who were first lower who then went up that capture our attention.

即使在一段时间内,他们对我们的评价依然不高,但是因为起点较低,只要是在日益改善，总比一开始就对我们评价好的人更有吸引力，正是开始低而慢慢增加的人,会引起我们的注意。

耶鲁公开课 - 心理学导论课程节选

But at the time period that we are examining, the period in which he writes Comus, the early 1630s, Milton seems very much interested in remaining virginal forever, avoiding even the sanctioned loss of virginity which is the state of marriage.

但在我们研究这段时期时，17世纪30年代初他写《Comus》的时期，弥尔顿似乎还对永远保持童贞非常感兴趣，甚至避开支持婚姻所必须经历的一个阶段,失去童贞。

耶鲁公开课 - 弥尔顿课程节选

And there was the confluence of religion and business and science and all of these things that changed dramatically at about that period of time.

当时宗教，商业,科学等等都有了交叉点,它们在那个时期发生了巨大的转变。

普林斯顿公开课 - 人性课程节选

We did that, we came up with very good Chinese search engine technology, and we signed up a lot of the Chinese portals in a very short period of time.

我们开发了,很好的中文搜索引擎技术，并在短期内，和许多门户网站公司,签了合约。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

And it turns out that simply by counting the number of those spikes that occurs at a period of time.

随后，只要数一数在一定时间内,产生的尖峰脉冲的数量。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Okay, well the interesting thing is, you guys in a very short period of time generated a number of ideas about what this could be.

好,有意思的是,大家在很短时间内,猜出了很多种东西

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选