Security officials in Massachusetts say there are no known threats to Boston and that Thursday's raids at a suburban home and a fuel station followed a period of close, confidential contact with New York's police department and federal agents.

VOA: standard.2010.05.14

Internet industry was in a very difficult time at that time, at that period, and we gradually realized that this company cannot really survive if we stick with the backend technology providers thing.

当时互联网行业正处于困境，如果坚持做后台搜索技术提供商,这个公司将无法生存。

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

I heard that there is an evaluation period for students at the end of each semester.

我听说学生在每个学期末有一个评估时段。

关于课程评价制度 - SpeakingMax英语口语达人

The next time you go to Mycenae don't miss the cistern that was dug in the mountains, on the hillside, within the walls at that period.

你们下次去迈锡尼古城的时候,一定不要错过那一时期在山坡和城墙之间,挖掘的蓄水池

耶鲁公开课 - 古希腊历史简介课程节选

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

Monday evening will be the time at which the midterm exam will be posted on the website, and that'll be at 6:00 pm Monday evening. You'll have a 24-hour period of time in which to find--I forget what I said--30 or 40 minutes? It'll be clear on the instructions. To just sit and treat it as if you're in an in-class exam situation, and write your essay.

周一晚上期中考试的内容会,粘贴到网站上，应该是晚上六点,你可以在一天之内抽出30到40分钟完成考试0,这在说明上都写明了,就把它当作课堂考试对待，写一篇短论文。

耶鲁公开课 - 旧约导论课程节选

If you look at the Frank Russell data and I just cited ten-year returns ending June 30,2005, so that period started in 1996 -well,in 1996 there were 307 managers that reported returns.

看看罗素公司的数据,我引用了从1996年开始,截至2005年6月30日的十年收益,在1996年有307位经理人公布收益

耶鲁公开课 - 金融市场课程节选

I would look at them and... What's that, cubism? That period, I like that.

我喜欢看着它们……那是什么，立体主义？我喜欢那个时期的作品。

喜欢毕加索吗？ - SpeakingMax英语口语达人

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

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

Now the nice thing about this is that the degradation mechanisms seem to persist for some period of time, beyond the time at which you deliver the double stranded RNA; whereas, obviously, this mechanism here is only going to exist for as long as the anti-sense sequence is present.

而好消息是降解过程会持续一段时间,比你转入双链RNA的时间要长,但是,这种机制只会在,有反义链的时候发挥作用

耶鲁公开课 - 生物医学工程探索课程节选

Another thing that is interesting is that when you look at the burials of Greeks in the post-Mycenaean period, in the Dark Ages, there's nothing resembling those grand tombs and the wealth that's buried in them for the dead.

还有件很有趣的事,就是在黑暗时代迈锡尼后期,君主的陵墓中没有与其身份相称的陪葬品,没有为来生准备的金银财宝

耶鲁公开课 - 古希腊历史简介课程节选

Wouldn't a later writer have cleaned up this ancestral record if this were in fact something composed at a later period? Also, he notes that the representation of inter-ethnic relationships in the patriarchal stories does not accord with the reality of a later period.

后世的作者难道不会把祖先不光彩的记录抹去吗,如果事实上这故事是后来创作的话？同时，他还提出，宗族故事中所展示的种族间关系,与后世的现实是不相一致的。

耶鲁公开课 - 旧约导论课程节选