The cows wear collars around their necks that identify them to the system.

VOA: special.2009.05.12

It turns out everything around us moves energy around in one way or the other If you're a biological system, you're burning calories, burning ATP.

我们周围的一切物质,都以这样那样的方式传递着能量,如果你是一个生物系统，你会燃烧卡路里，燃烧。

麻省理工公开课 - 热力学与动力学课程节选

So magic in a pagan system, Kaufman claims, is a way of getting around the gods, circumventing the capricious will of the gods and demons.

考夫曼宣称，异教系统中的法术，可以用来应付众神,能使反复无常的神谕和恶魔的诅咒失灵。

耶鲁公开课 - 旧约导论课程节选

The major work on the Interstate Highway System was completed around nineteen-ninety.

VOA: special.2010.01.11

It's not that all these layers are wrapped around the nervous system and the endocrine system.

不是所有功能,都围绕着神经系统和内分泌系统展开的

耶鲁公开课 - 生物医学工程探索课程节选

NASA hopes that Dawn's year long orbit around Vesta will help scientists learn more about the development of the solar system, and how asteroids and other space objects were created.

VOA: special.2011.07.27

One thing that's been a trend around the world is that the I mentioned that the U.S. Federal Reserve System was different from other central banks in that it was designed to have independence.

一个在世界范围内,流行的事实是,我提到过美国联邦储备系统,与其他中央银行不同,因为它有独立自主性。

耶鲁公开课 - 金融市场课程节选

"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

The innate immune system composed of neutrophils and macrophages; these are cells that are crawling around your body all the time ready to eat bacteria.

它由嗜中性粒细胞和巨噬细胞构成,这些细胞不断在周身蠕行,准备吞噬细菌

耶鲁公开课 - 生物医学工程探索课程节选

I can tell you around 50 percent of the total water that we produce becomes non-revenue for the system."

VOA: standard.2010.08.04

So these organisms like this are abundant in the world around us and our immune system prevents us from getting sick most of the time.

在我们周围充斥着像这样的生物体,而免疫系统在大多数时候能够抵御疾病

耶鲁公开课 - 生物医学工程探索课程节选

"Now they are checked by Interpol. Before we did not have a communications system that allowed information to be exchanged rapidly around the world with all of our countries.

VOA: standard.2009.11.09

As it does that it changes the volume of the heart and gives the - creates the pressure that moves blood around your body, so it has that muscular system.

这使心脏的体积发生变化,产生了足以使血液流遍全身的压力,这就是心脏中有肌肉系统的原因

耶鲁公开课 - 生物医学工程探索课程节选

But given the fact that this current weather system is forecast to be around for a few more days, the trouble brought on by the snow and wind will be felt well into the new week.

VOA: standard.2009.12.21

But he warns it will not be a fast recovery. "The effects of some of the government stimulus kicking in, some of the effects of these attempts to stabilize the financial system will all lead to things turning around.

VOA: standard.2009.03.18

"If we are able to do a few of the things that we are promoting around the ability to take costs out of our system, I think we can be very,very vibrant, and very relevant going forward."

VOA: standard.2010.04.13

To put it mildly, the group of friends I've had over the years and ran around together with, it was originally seven of us and the healthcare system in the United States has killed us all but two,".

VOA: standard.2009.06.13