Others last for months or even years. There is no clear way of predicting at the present time how long this activity might go on for."

VOA: standard.2010.04.16

It has a gate on it and that gate is in open or close state depending on whether a ligand is present or not.

在这个通道上有个门,这个门是打开还是关闭,取决于配体到来与否

耶鲁公开课 - 生物医学工程探索课程节选

Here is the price-earnings ratio for the U.S. stock market from 1881 to the present-- this is also on that spreadsheet that you have on the website.

这是美国股票市场的市盈率,从1881年至今,这份数据也在网站上的电子数据表上

耶鲁公开课 - 金融市场课程节选

Every other book in this political science that has since been written, beginning with Aristotle's Politics and moving on to the present day is, in one way or another, an answer, a response to Plato's Republic.

这门政治科学,所用的其它现存读物，从亚里士多德的《政治学》,一直到今日的其它著作，多少都只是，对柏拉图的《理想国》回答或响应。

耶鲁公开课 - 政治哲学导论课程节选

But the question is, in my present circumstances, with evil on my hands, entailed from my father, would the general interest of the slaves and community at large, with reference to the slaves, be promoted best by emancipation?

但问题是,在我目前的情况下,我已犯下如此罪行,我延续了父辈的罪恶,对于奴隶的问题,解放是否能够使,他们和全社会的整体利益得到提升呢

耶鲁公开课 - 美国内战与重建课程节选

And now maybe...now I've just heard that maybe one of those two recessions wasn't even a classic recession at all So the question is 1890 to 1945 on the one hand, 1983 to the present on the other, does that tell us that ? we've gotten better at government interventions?

那么现在也许。。。就你们刚才所说,其中一次所谓的衰退也许,根本不能算是典型的经济衰退了,那么问题在于，从1890年到1945年，以及1983年至今的经济状况，是否说明,政府对经济的干预是有利的？

斯坦福公开课 - 经济学课程节选

I also want to assume for our present purposes that there's only pressure volume work going on, which is to say I want to put pdV p dV in here minus p dV for dw.

同时假定,对于我们目前的目的而言，只有压强做功这就是说,我要把这里的dw替换为负。

麻省理工公开课 - 热力学与动力学课程节选