According to this logic, the way to increase efficiency end drive down unit costs is to limit product variety and produce a standardized product in large volumes.

据此逻辑，提高效率而压缩单位成本的方法就是限定产品种类，并且进行标准化批量生产。

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Increased energy end-use efficiency, nuclear energy and the growing contribution from renewable energy cannot yet compensate for the globally increasing demand for power and transport.

提高能源效率，核能和可再生能源日益增长的贡献还不能弥补全球不断增长的电力需求和运输。

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This efficiency is something we need to ensure that our pollution detection sensors can navigate in the underwater environment for hours on end.

我们需要利用这种效能以保证我们的污染检测传感器可在水下环境持续工作数小时。

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Secondly, when considering end-to-end efficiency, it is much less energy-intensive to heat water by direct use of natural gas on-site, rather than by using that natural gas to first make electricity that is used to heat water because of the large conversion losses at power plants.

FORBES: To Conserve Energy - Conserve Water

Using smarter technologies, more brains and less money to wring more work from less delivered energy--what energy experts call "end-use efficiency"--is the largest, cheapest, safest, cleanest, fastest, most diverse, least visible, least understood and most neglected way to provide energy services.

FORBES: Magazine Article

The eco-rating system assesses 15 specific criteria drawn from five general categories of sustainability attributes - attributes include the usage of environmentally preferable materials, minimization of hazardous substances, energy efficiency, responsible end-of-life treatment and environmentally-responsible manufacturing.

ENGADGET: AT&T's Eco-rating makes in-store debut alongside Pantech Renue