They also said people should take less than four thousand milligrams of acetaminophen in a single day.

VOA: special.2009.07.21

So, if we take a look at what a single bond is, and let me grab some molecules here.

如果来我们看一下单键，让我拿个分子。

麻省理工公开课 - 化学原理课程节选

You really can take in everything single at a time, you can really pay attention to each piece.

你真的能够一次专注于一个作品，并理解它。

艺术画廊，来吧 - SpeakingMax英语口语达人

To date,"On Stage" has sold more than The re-mastered "Elvis Presley On Stage" contains additional recordings from both sets of concerts at the International, as well as nine bonus tracks and a rehearsal take of his hit single, "The Wonder Of You."

VOA: standard.2010.04.30

I feel like there is a general distinction we made between the right to life that individuals possess and the fact that the government cannot take away a single individual's right to life.

我觉得这两者之间有明显的区别,就是个人所拥有的生命权,以及政府不能夺走,个人生命权的事实。

耶鲁公开课 - 公正课程节选

But as it was a TV show and so sure enough, every single episode, some new dramatic danger would take place.

但在这档电视节目中,每一集,都会戏剧性地发生一个新的危机

耶鲁公开课 - 死亡课程节选

The reason for that is, if you are just engaged in a single crop farming, well you plant it, you take care of it, and then when the times comes you reap it.

其中的原因是,如果只是种庄稼,你先播种,接着你好生照料它们,然后成熟时收割它们

耶鲁公开课 - 古希腊历史简介课程节选

It turns out that we can do that now because we have an enzyme called reverse transcriptase, which is able to take single stranded messenger RNA and make DNA out of it.

我们现在已经可以做到这一点了,因为我们有了反转录酶,反转录酶可以用,单链的mRNA创造出DNA

耶鲁公开课 - 生物医学工程探索课程节选

When it's double stranded this gene can't be translated, because you have to have the single strand in order for the transfer RNA to bind and for this process of translation to take place.

当基因处于双链结构状态时,是不能进行翻译的,因为必须把双链拆开得到单链,才能结合转运RNA并开始翻译过程

耶鲁公开课 - 生物医学工程探索课程节选