The rise of these births may be linked to increased use of drugs to start or speed up labor and more births by Cesarean section.

VOA: special.2009.10.26

PROFESSOR: I want to take a few minutes at the start of today's lecture to wrap up a few more things about debugging.

教授：我想在今天讲座的开头,再花几分钟讲完调试的剩余内容,然后我们再讲主要内容。

麻省理工公开课 - 计算机科学及编程导论课程节选

This piston is being brought out, so we expect 0 the work to be negative, negative. And we start o V2 ut with zero volume. We end up with a volume p2 of V2, and the external pressure is constant to p2.

所以我们可以想象功是负的,开始的时候体积是,最终的容积是,外界的压力恒为。

麻省理工公开课 - 热力学与动力学课程节选

Its mission is to examine Britain's role in the run-up to the start of the Iraq war in 2003 through the conflict and its aftermath.

VOA: standard.2009.11.25

And I've highlighted in blue up there one of the pieces I'm going to start with.

我已经把要开始的那一部分,用蓝色标注了。

麻省理工公开课 - 计算机科学及编程导论课程节选

On a 9.6-hectare tract of land . on the Texas coast south of Houston, a start-up company from Florida called Algenol, in partnership with the Dow Chemical company, plans to build more than 3,000 bioreactors,starting next year.

VOA: standard.2009.09.02

Now the modulation--change of key from major to back to minor as the cortege will start up again and then we-- A nice clarinet sound there and here comes our cortege with the bass.

现在变调了,从大调,变回小调,送葬行列再次启动,然后我们听到了优美的单簧管,送葬行列伴随着低音来了

耶鲁公开课 - 聆听音乐课程节选

They truly got into the spirit. And in the second party one of the students took the microphone and she got everyone to start singing Christmas songs, which to me helped bring up the whole spirit of why we were there."

VOA: standard.2009.12.24

it's clear that you want to add a vector that looks like that, because then you go from the start of this to the finish of that, you end up at the same point and you get this invisible 0 vector.

显然应该给它加上这样一个矢量,因为从这个矢量的起点指向那个矢量的终点,最终指向的是同一个点,你就得到这个不可见的零矢量

耶鲁公开课 - 基础物理课程节选

Or you get a cold, the cold virus takes hold, the viruses start replicating inside of you and it takes some time for immune system to gear up to eliminate it, so we're used to thinking about responses that take some time.

或者你得了感冒,感冒病毒扎根在你的身体中,病毒开始在你体内复制,免疫系统需要一定时间做好准备去消灭它,所以我们曾认为免疫反应需要一定时间

耶鲁公开课 - 生物医学工程探索课程节选