It must have fourteen lines, with three groups of four lines that set up the subject or problem of the poem.

VOA: special.2010.01.06

So we can have four total hydrogens bonding here, - and we can think about how to describe these carbon- carbon bonds.

我们这里一共有四个氢原子成键，我们可以考虑怎么来-,描述碳碳键。

麻省理工公开课 - 化学原理课程节选

I thought London gives me enough to do for the next four years while I am studying to have a life.

我觉得在我学会在这里生活的时候，伦敦给予了我足够在未来四年里可以做的事情。

世界就是我的故乡 - SpeakingMax英语口语达人

They are depressed. Word expert Charles Funk says people have been feeling down in the dumps for more than four-hundred years.

VOA: special.2011.08.07

So we can think about now doing bonding, and now we have four equal orbitals with one electronic each.

我们现在可以考虑成键了，现在我们有4个等价的轨道，每个上面有1个电子。

麻省理工公开课 - 化学原理课程节选

The law will require Americans to have health insurance, with a few exceptions, or pay a fine starting in four years.

VOA: special.2010.03.26

Let's say you have to go through three or four operations to get a final number, well, do it algebraically.

让我们说,你不得不通过3-4个操作,才能得到最终的数，好吧，用代数方法求解。

麻省理工公开课 - 固态化学导论课程节选

For the first time, Americans will be required to have health insurance or face a yearly fine starting in four years.

VOA: special.2010.03.24

Because it takes three units where there's only four choices at each position to have at least 20 unique combinations.

因为每个位点上仅有四种可能性,只有采用三个碱基一组,才能取得至少二十种不同的组合方式

耶鲁公开课 - 生物医学工程探索课程节选

Since its beginnings sixty years ago, four hundred ninety-four criminals have been placed on the "Top Ten List."

VOA: special.2010.05.05

It's about the four-dollar cup of coffee that we have three times a day, because we need to keep the feel going.

可能只是节省一杯4美元的咖啡,我们每天要喝三次咖啡，只是为了留住这种感觉。

普林斯顿公开课 - 人性课程节选

Also,in four years,employers with more than fifty workers will have to offer their employees a health insurance plan.

VOA: special.2010.03.26

Four years later, as of today, 76% I think we have about 76% of the Chinese search traffic.

而四年之后的今天，这个数据已经上升到。

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

Almost four thousand fellows have been chosen since the first were named in June of two thousand one.

VOA: special.2009.09.24

You'd have four times as many companies but you might not have four times as much valuable innovation.

有的只是四倍数量的公司，但是,你能够有的有价值的创新想法却远远不够。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选

He says the advice there is to have at least two thousand four hundred dollars for twelve months in the United States.

VOA: special.2009.05.21

And not only was it a party school, you were going to have an amazing time for the four years and beyond.

不仅是个派对大学，而且未来四年甚至以后，都会过得很快乐。

哈佛公开课 - 幸福课课程节选

"Over just the last three years, NHTSAs defect and compliance investigations have resulted in five hundred twenty-four recalls involving twenty-three million vehicles.

VOA: special.2010.02.26

In the next line four lines, we have Camus; the god of the river Cam appears.

下面四行，开姆斯;,开姆河河神出现了。

耶鲁公开课 - 弥尔顿课程节选

For example, permanent populations of Canada geese in North America have increased three hundred percent in eighteen years to four million birds.

VOA: special.2009.04.01

Why do you have four different chapters of this book, all telling the same story?

为什么一本书要有四个不同的章节，来讲述同一个故事？

耶鲁公开课 - 新约课程节选

But regional carriers have had four in the last five years, while major airlines have had one.

VOA: special.2009.06.13

For at least four decades, people have been building tools called debuggers.

在过去的至少四十年里,人们一直在做一种叫做调试器的工具。

麻省理工公开课 - 计算机科学及编程导论课程节选

But recent findings suggested that tPA may be effective in saving brain tissue even if three to four and a half hours have passed.

VOA: special.2009.09.22

You might have four independent sculptures in there, but they relate one to another; they make some sort of special sense one to another.

你有四个独立的雕塑,但他们却彼此联系,彼此间好像有某种特别的意义

耶鲁公开课 - 聆听音乐课程节选

Operations have intensified. More than four hundred American and coalition troops have been killed so far this year, more than during all of last year.

VOA: special.2009.10.10

Now going from three to four right, so we have another isothermal process for an ideal gas, so I won't try to make you sing again so soon.

从第三点到第四点，这也是一个理想气体的,恒温过程，这次不用你们集体回答了。

麻省理工公开课 - 热力学与动力学课程节选

But recent findings have suggested that tPA may be effective in saving brain tissue even if three to four and a half hours have passed.

VOA: special.2009.08.12

We have probably four great reform periods in American history.

我们美国历史上约有四个大改革时期

耶鲁公开课 - 美国内战与重建课程节选

At the moment we have been assigned four TAs, though looking around we won't need four TAs, but at the moment we have Da-Ihn Yoo, we have Michael Verriman, we have Andrey Ivanov, and we have Brian Reilly.

目前给我们安排了四个助教,虽然我觉得用不了四个,不过我们目前还是有余大有,和迈克尔·韦里曼和安德烈·伊凡诺夫,还有布莱恩·莱利

耶鲁公开课 - 1871年后的法国课程节选