Today, we will talk exclusively about work and energy.

今天我们专门讲讲，功和能。

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Speaking good English really requires a lot of hard work and energy, but it's really worth the effort.

要讲好英语真的需要很多努力，需要付出很多精力，但这都是值得的。

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At present work and energy in confined motion are treated with the method of work done by confined force which is analysed and calculated.

对于约束运动中的功和能，目前均采用具体分析和计算约束力所作功的方法来处理。

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Others carried out energy studies of city school buildings to make sure the equipment and systems work effectively.

VOA: special.2009.09.04

You can take heat energy and convert it to work energy and vice versa, and it doesn't say anything about that you have to waste heat if you're going to transform heat into work.

你可以把热能便成功,也可以反过来,但它对于如果你要把热变成功,就必须浪费热量这件事只字未提,它只是说这是能量。

麻省理工公开课 - 热力学与动力学课程节选

That is, it gives us the relationship between energy and work and heat.

热力学第一定律阐述了,能量，功和热之间的关系。

麻省理工公开课 - 热力学与动力学课程节选

The underlying fact-of-merit here is that about 5% of employed Americans work in businesses that produce energy, and 95% work in energy-consuming businesses.

FORBES: Clean Energy Driven Job Growth Is A Return To The Stone Age

Its sales were boosted by existing contracts with major companies such as Nexen and Talisman and new work with Dong Energy and National Grid, among others.

BBC: Glasgow firm Amor Group draws up major growth plans

Mattingly wants his hitters to make the opposing pitchers work and exert excessive energy.

FORBES: Can The Dodgers Find A Driving Force In Post-McCourt Era?