So everything from creating solar hot-water systems on our rooftops to making our buildings much more energy efficient."

VOA: special.2011.07.08

Thermodynamicstalks about equilibrium systems and how to go from one state of equilibrium to another state of equilibrium.

热力学研究的是平衡系统,以及如何,从一个平衡态转变到另一个平衡态。

麻省理工公开课 - 热力学与动力学课程节选

So it applies to macroscopic systems that are in equilibrium, and how to go from one equilibrium state to another equilibrium state, and it's entirely empirical in its foundation.

因此，热力学研究的是平衡态的宏观系统,以及如何从,一个平衡态过渡到另一个平衡态，它完全是建立在经验的基础上的。

麻省理工公开课 - 热力学与动力学课程节选

Eric Hartman,the director, described the water collection systems in blog postings from Tanzania earlier this month.

VOA: special.2009.07.27

This seems in many ways to be quite far from the American democracy based on constitutional government, systems of checks and balances, protection of individual rights, and so on.

这似乎在很多方面,有别于美式民主,后者的根基是宪制政府，制衡体系，保障个人权利等。

耶鲁公开课 - 政治哲学导论课程节选

Recently,in Tanzania, thirteen Amizade volunteers worked on systems to harvest rainwater from the roofs of homes.

VOA: special.2009.07.27

Sometimes second messengers collect signals from a variety of different receptor systems, translate them into one kind of internal change, and the cell then just has to know about that one thing changing.

第二信使分子能够收集,来自不同受体系统的信号,将它们转化为同一种细胞内在的变化,这样细胞就只需对一种变化作出反应

耶鲁公开课 - 生物医学工程探索课程节选

The women recently earned master's degrees in space systems engineering from the University of Michigan.

VOA: special.2009.02.16

JILL MIKUCKI: "We have a lot to learn from the microbes that survive in these kinds of environments and have adapted to these cold, low-energy systems.

VOA: special.2009.06.03

Tornadoes can be measured using wind speed information from Doppler radar systems.

VOA: special.2010.05.11

It could not stand apart from the world's other money systems.

VOA: special.2010.07.01

Felgenhauer says Russia most likely will need to buy technologies and components from the West, as well as entire weapons systems.

VOA: standard.2009.03.20

The $10-billion U.S.missile defense program involves a combination of systems designed to detect and intercept missiles coming from short,medium and long distances.

VOA: standard.2010.03.26

We'll want to have an endless spread out Internet for power systems, with all kinds of people pushing power from their rooftops down the grid."

VOA: standard.2010.04.21

Dr.Craig Smith,the chief executive of Electro Optic Systems, says laser beams fired from the ground could protect astronauts and satellites by targeting space junk that travels at potentially devastating speeds.

VOA: standard.2010.07.24

At the Africa Regional Conference on Fistula and Maternal Health, more than 150 people from 40 countries and partner organizations met in Mauritania to better integrate fistula care into existing national health care systems.

VOA: standard.2009.12.23

Some fire chiefs in California say that residents should always be encouraged to evacuate, but Naomi Brown, from the Australasian Fire and Emergency Service Authorities Council, says installing effective early warning systems is the key.

VOA: standard.2009.06.24

We need help from the developing countries as they put priority on this in their budgets and the quality of their delivery systems to get out and reach every child, And he calls for more public/private partnerships that include the major pharmaceutical companies.

VOA: standard.2010.01.29