"We have good partnerships among the countries within each agro-eco system so that through this twinning they can learn lessons from each other and work together effectively through time."

VOA: special.2010.02.08

And so, each hydrogen has access to each electron, and now we have a satisfied system.

每个氢原子都有两个电子，这是一个令人满意的体系。

麻省理工公开课 - 固态化学导论课程节选

You just need a few macroscopic variables that are very familiar to you, like the pressure, the temperature, the volume, the number of moles of each component, the mass of the system.

你只需要某些你非常熟悉的宏观变量,比如压强，温度，体积，每个组分的摩尔数，系统的质量。

麻省理工公开课 - 热力学与动力学课程节选

Reports of solar system objects striking each other are extremely rare.

VOA: special.2009.08.25

Because of that, because they're not directly wired together but because there is - are decisions and integrations occurring at each junction, the potential operation of the nervous system becomes diverse.

正因如此,正因为神经元并不是直接联系在一起的,但在每个连接处进行决策和信息整合,使神经系统的活动具有多样性

耶鲁公开课 - 生物医学工程探索课程节选

At the news conference, Mr.Obama said, if the system is not changed, will lose health insurance each day.

VOA: standard.2009.07.23

This is providing work that's being used in here, but if you take the whole outside of the surroundings and this whole thing is the system, no net work, these things cancel each other, and yet heat's going up.

如果把外面的全部当成环境，把这里的全部当成系统,那么就没有净的功，它们相互抵消了，热量向上传输，会发生什么？

麻省理工公开课 - 热力学与动力学课程节选