Energy conservation is of vital importance to us because our society is facing energy shortage.

节约能源对于我们而言至关重要，因为我们的社会面临能源短缺的问题。

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Now, in physics we do believe very strongly in the conservation of energy, not necessarily in the conservation of kinetic energy.

在物理中我们并非坚信，能量是守恒的，这并不是一定的，动能不一定守恒。

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We need to vigorously develop new energy sources, new materials, energy conservation, environmental protection, biomedicine, information networks, and high-end manufacturing industries.

要大力发展新能源、新材料、节能环保、生物医药、信息网络和高端制造产业。

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Each year the Washington-based League of Conservation Voters releases a scorecard that rates the performance of members of Congress on environment and energy issues.

VOA: standard.2010.02.25

It talks about the conservation of energy.

它讲的是能量的守恒。

麻省理工公开课 - 热力学与动力学课程节选

All right, now what we're going to learn next time and Bob Field is going to teach the lecture next time, is how heat and work are related, and how they're really the same thing, and how they're related through the first law, through energy conservation.

这节课就到这里,下节课将由Bob，Field讲授,我们将学习功与热量的关系，认识到它们在本质上的相同之处，并通过热力学第一定律，亦即能量守恒定律，把它们联系起来。

麻省理工公开课 - 热力学与动力学课程节选

What about all those bureaucrats at the Department of Energy working on renewable energy and energy conservation?

FORBES: Tax My Carbon

Although, with plentiful oil and natural gas in the US, the pressure on energy conservation has eased a bit it is clear that there is a finite amount of accessible energy available and conservation of energy is important to preserve these assets for future generations.

FORBES: Pumping Iron and Keeping Cool

The trust urged the government to produce an energy strategy which focuses on energy conservation and not just generation.

BBC: Land charity objects to wind farm