A "tornado outbreak" is often defined as six or more tornadoes produced by the same weather system within a day.

VOA: special.2010.05.11

These two oscillate back and forth so the moment of deprivation is often then balanced by a moment of imagination.

来回交替丧失的时刻,经常和想像的时刻,互相平衡。

耶鲁公开课 - 1945年后的美国小说课程节选

When we read the flood story in Genesis 6 through 9, we're often struck by the very odd literary style.

当我们在《创世纪》中读到关于大洪水故事时，会觉得文风非常奇怪。

耶鲁公开课 - 旧约导论课程节选

"Each of the characters has a unique characteristic that we think is not often represented by their ethnicities, broadly speaking,in the media."

VOA: special.2011.04.22

And in the process of tidying it up and making it prettier, I'll often by accident find the bug.

让我的程序更漂亮些,在这个清理美化代码的过程中，我常常无意中发现我的错误。

麻省理工公开课 - 计算机科学及编程导论课程节选

She often spoke about the problems of women trying to succeed in a world mainly controlled by men.

VOA: special.2010.08.08

By that he meant, he did not need a co-president, which some people often said what the WHCF was.

他的意思是，他不需要一个联合总统，这也是人们,经常用来形容我们的。

普林斯顿公开课 - 国际座谈会课程节选

Parents and other adults often say that people judge you by the way you look.

VOA: special.2009.11.24

And the relationship that he put forth is that the momentum is equal to Planck's constant times nu divided by the speed of light, or it's often more useful for us to think about it in terms of wavelength.

爱因斯坦提出的关系式是,动量等于普朗克常数,乘以υ除以光速，或者用波长来表示,通常更容易让我们想明白。

麻省理工公开课 - 化学原理课程节选

That's what's wrong with you. You should be kissed,and often. And by someone who knows how'" "And I suppose you think you're the proper person."

VOA: special.2011.04.14

We can often better understand the dialogues by seeing Socrates as putting forward certain positions that he does not think are altogether adequate.

通过了解那些由苏格拉底提出,但他自己也觉得不充分的观点,我们可以更好地理解这些对话作品

耶鲁公开课 - 死亡课程节选

In fact, the big airlines often save money by using smaller ones to carry passengers.

VOA: special.2009.06.13

We often don't we even today yes we often judge teachers by their students ? by the company they keep yes don't we?

时至今日,我们不也常常,藉由其学生或所属同僚来审视老师吗！是吧？

耶鲁公开课 - 政治哲学导论课程节选

Our subject this week is tsunamis -- the sea waves often caused by earthquakes.

VOA: special.2009.03.17

Well, I was actually very impressed of his demeanor because just by the fact that it was his genius that his film were still often ill-received by the production companies in America.

我确实被他风度倾倒,因为他的天才,他的电影并不被,美国电影公司接受。

麻省理工公开课 - 电影哲学课程节选

Their campaigns often were led by members of the Ku Klux Klan.

VOA: special.2010.02.18

The romance heroine is often threatened with rape, but by her cleverness or by good luck or a concatenation of forces ; she can always invariably avert that tragedy; and by the end of the work she can present herself to her future husband as a virgin.

这位传奇的女英雄总是被强奸所威胁，但是多亏了她的机敏，或是走好运，或是一连串的军队暴力,她总是能避免悲剧;,在作品的最终,她呈现在未来丈夫面前的仍是一个处女。

耶鲁公开课 - 弥尔顿课程节选

She says they often start by making the lowest payment required.

VOA: special.2009.04.10

These offerings are generally consumed by the offerer and his family, very often in a festive situation, as a big feast, after certain portions are donated to the priests, again.

这些祭品通常由供奉者及其家庭自己消耗掉，通常在节日，把某些部位先给祭司后，它被作为大餐被全家享用。

耶鲁公开课 - 旧约导论课程节选

Giovanni often sat by his window to look at the garden.

VOA: special.2009.05.23

The first item always on that was the overnight casualty report from Iraq and Afghanistan, and I would often come and see that had been circled by the president or that he would be reflecting on that.

上面的第一条永远是,这一晚在伊拉克和阿富汗,士兵的伤亡报告，我来的时候会看到那条消息,被布什总统圈了出来,他看着报告会陷入沉思。

普林斯顿公开课 - 国际座谈会课程节选

He often gave orders that were not approved by the president.

VOA: special.2009.05.24

"We must stop the shark-finning which is resulting in the death of thirty to seventy million sharks each year because that has so upset ocean ecology by the removal of these often apex, top-level predators."

VOA: special.2011.03.15

He wrote this about his experience: I know that during that long and racking march of thirty-six hours over the unnamed mountains and glaciers of South Georgia it seemed to me often that we were four,not three. The American poet T.S.Eliot was influenced by Shackletons description.

VOA: special.2010.02.24

The cancer scientists say this cancer often begins with an infection caused by a bacteria called Helicobactor Pylori, also known as H-Pylori.

VOA: standard.2010.05.12

By the time they go to a clinic for malaria treatment, Dr.Rwagacondo says it is often too late.

VOA: standard.2009.04.25

They were taken away from them by the murderers of the Third Reich, often in the course of carrying out the Final Solution.

VOA: standard.2010.07.26

She says the onset of maternal complications is unpredictable, and the response is often slowed by what health experts call "the three delays".

VOA: standard.2009.11.10

"Often time terrorism is beaten not by the government but by regular people who have the courage to report something unusual to the authorities,"

VOA: standard.2009.09.21

The other thing is that criminals are very clever. They often insulate themselves by having many different transactions in between where cigarettes are ultimately sold."

VOA: standard.2010.08.11