"We've hosted 146 major events in the country and not a single incident.

VOA: standard.2009.06.12

And not a single young person in the room except my son, who was then a teenager who would tag along and see his father testify.

却没有一个年轻人在场,除了我儿子，是当时唯一的青少年,除了他没人跟着父亲参加听证会。

麻省理工公开课 - 媒体、教育、市场课程节选

Yes. In fact, there is not enough energy in a single photon to go ahead and eject an electron from this zinc surface.

是的，事实上，这里的光子没有足够的能量,去从锌表面逐出一个电子。

麻省理工公开课 - 化学原理课程节选

But not a single child and only one woman was saved.

VOA: special.2009.11.11

If you look really carefully, you could find it was not a single line but two lines, and Bohr is silent on such matters.

如果你仔细观察的话，会发现这是两条谱线而非一条，对这一研究，波尔不得不沉默。

麻省理工公开课 - 固态化学导论课程节选

I'm usually single, and that is usually not a problem.

VOA: special.2009.12.28

And "Dog" Is also a morpheme, but not always because there are single morphemes and then there are words that are composed of many morphemes.

狗"也是一个语素,但词和语素并不总是相同,因为语素是独立的,但词却可以由很多语素组成

耶鲁公开课 - 心理学导论课程节选

But not a single Republican voted for the package in the House of Representatives and only three voted for it in the Senate.

VOA: standard.2009.03.17

The Buddha talked about it thousands of years ago, "Thousands of candles can be lit from a single candle, and the life of the candle will not be shortened.

佛在几千年前就谈到它，“一支蜡烛可以点燃千支蜡烛，蜡烛的生命不会被缩短。

哈佛公开课 - 幸福课课程节选

MDC supporters and activists are arrested on minor charges, while not a single ZANU-PF supporter has been arrested, despite the 150 murders of MDC supporters last year.

VOA: standard.2009.09.15

And we find the same thing for these two atoms here, it's not actually a double bond, it's somewhere between a single bond and a double bond.

而且我们发现这两个原子的情况是一样的，它其实不是一个双键，而是介于单键与双键之间的。

麻省理工公开课 - 化学原理课程节选

Since all 40 Republicans were on record as opposing the bill, the Democrats did not have a single vote to spare, needing every Democrat and Independent who normally votes with Democrats to cast their votes for it, or else have the vote dead before it ever reached the floor.

VOA: standard.2009.11.23

And by that what we mean is that they're absolutely identical, and it turns out that this here is not a double bond, it's not a single bond either, it's actually something in between.

这意味着它们是绝对完全相同的，实际情况应该是这不是一个双键，这也不是一个单键，而是介于两者之间的状态。

麻省理工公开课 - 化学原理课程节选

And resonance is the idea that sometimes one single Lewis structure does not adequately describe the electron configuration around a given molecule, so instead you need to draw two different Lewis structures to describe that more appropriately.

而所谓共振态,就是有时候一个路易斯结构不足以,完整描述一个给定分子的电子排布，因此这时你需要同时画出两个,不同的路易斯结构来描述它,这样会更恰当。

麻省理工公开课 - 化学原理课程节选