Scientists say enough oxygen remains in a person's system for several minutes after breathing stops.

VOA: special.2009.06.09

Then, after you define what your system is, whatever is left over of the universe is the surroundings.

当你定义了你的系统后，宇宙的其余部分,就是环境。

麻省理工公开课 - 热力学与动力学课程节选

We just had one after another; the banking system kept collapsing.

我们一次又一次地经历着；,银行系统持续崩塌着。

耶鲁公开课 - 金融市场课程节选

It supervised creation of a system for nations on the edges of the Indian Ocean after the great earthquake and tsunami of two thousand four.

VOA: special.2009.03.17

Here, I've just picked a couple of the pictures that I showed you last time when we were talking about cell communication in the immune system, What happens after the vaccine is introduced into your body is that it initiates cellular events.

我挑选了,我上次给你们展示的几幅图片,当我们讨论到,免疫系统中的细胞沟通时,讲到过当人体接种疫苗之后,能够触发,细胞活动

耶鲁公开课 - 生物医学工程探索课程节选

A system of waterways designed after the Italian city of Venice has been built there.

VOA: special.2010.01.03

After their first tests, the researchers cleaned the water system with chlorine dioxide.

VOA: special.2011.04.06

For Zak Ahmad, just one week after getting polio, his immune system began to fight the virus.

VOA: standard.2010.08.02

NASA officials cleared the flight after technicians fixed a hydrogen leak in the shuttle's fueling system, which delayed the launch from last week.

VOA: standard.2009.03.15

(Speaking) Toyota was founded in the early 1930s but the its real success came after World War II when it developed something called "The Toyota Production System."

VOA: standard.2010.02.15

After six Eurostar trains broke down in or near the tunnel that runs under the English Channel, the system has been suspended while engineers troubleshoot the electrical problems thought to have been brought on by condensation.

VOA: standard.2009.12.21

But I think as time went on after the Rose Revolution, I think he wanted to perpetuate this kind of system in which there was really absence of checks and balances, no real opposition included in the political process very much sort of governing by committee of the inner circle, of loyal allies around the president.

VOA: standard.2009.09.01