The problem may last a few seconds, but it can get worse and worse with age, leading to a heart attack or stroke.

VOA: special.2010.03.02

and then you would wait two seconds or so and then you would see a target, presented very rapidly.

然后你会等待大约两秒钟,的时间,之后你会看到一个目标，显示得非常快。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

And two, to give you a better sense of design especially as your programs get a little more involved and they play or they run for more than just a few seconds time.

另一方面，使你们对设计更有感觉,尤其是你的程序要适用于更多的应用环境或,要运行不止几秒钟时间的时候。

哈佛公开课 - 计算机科学课程节选

These include hearing a roaring or sucking noise, seeing the ocean suddenly pull back or rise, or feeling a strong earthquake that lasts more than twenty seconds.

VOA: special.2011.06.07

I'm going to let you think about it for about thirty seconds or so.

我给大家,30秒时间。

麻省理工公开课 - 热力学与动力学课程节选

Each performer had sixty seconds to perform his or her song.

VOA: special.2009.08.14

But for those of you that have been here for 30 seconds or longer see if you can get the right answer in here.

但那些已经来了30秒以上的同学,看看你们能不能得到正确的答案。

麻省理工公开课 - 化学原理课程节选

"And here I'm just talking about it in about 15 or 20 seconds, maybe a minute, but it was a lifetime."

VOA: standard.2009.06.02

When t is equal to 10,000 years or 10,000 seconds, you're going to find y is some huge negative number.

当t为一万年或一万秒时,我们得到y是一个极大的负数

耶鲁公开课 - 基础物理课程节选

Occasionally, a face would appear for a few seconds at a screened hole in the canvas, or a cuffed hand could be seen waving.

VOA: standard.2009.05.25

Compare after 30 or 60 seconds with the person next to you and see if before I reveal the answer we can't get everyone on to the exact same page.

和你身边的人比较30到60秒钟,看看是否在我揭露答案之前，我们不能使每个人,得到一个完全相同的页面。

哈佛公开课 - 计算机科学课程节选

That comes to around 3,000 deaths a day or one death every 40 seconds.

VOA: standard.2009.09.10

I think they're purple or so in scratch, or yeah, purple, I think, generally; say hi, for two seconds.

我觉得在scratch中，它们是华而不实的，我觉得，通常，显示hi，只要两秒钟。

哈佛公开课 - 计算机科学课程节选

"He was telling me I need to finish second, and he was also telling me 'Don't step on the line,' and he was also telling me, 'Just try to stay close.' They shot the gun and I saw him for about maybe two or three seconds.

VOA: standard.2009.08.21

So, that's something you will encounter in your review reading for the sections, that kind of review -- what we hope you have picked up from high school or will pick up quickly by doing some review. So, how about we have everyone take ten more seconds on the clicker question, get your final answer in here.

如果你们预习这部分就会看到它,我们希望你们，通过这样的预习能,快速的把高中,所学的都回忆起来,好，我给你们每人10秒钟回答,这个问题,在这里给出,你们最后的答案。

麻省理工公开课 - 化学原理课程节选

"Going out there, getting on the podiumand then watching two American flags go up while the national anthem was playing, and then to turn and there was like - it seemed like two or three seconds, but it was probably two-10ths where Johnny and I made eye contact - it was like 'We did it,'" Shortly after winning his gold medal, the 29-year-old Demong surprised his girlfriend Katie Koczynski by proposing at the post-race celebration.

VOA: standard.2010.02.27