Over the past year, sky-high fuel prices have focused minds on efficiency like never before.

在过去的一年里，高昂的燃料价格使人们前所未有地关注能源效率。

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And they are getting better, with over 17% efficiency achieved in lab conditions.

而且它们正不断得到改善，在实验室条件下效率可达17%。

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There is, he added, not enough analysis of the costs and benefits of new rules. Moreover regulators have opted for expansion over efficiency.

他补充道，现在没有对新规定进行足够成本效益分析，并且规制者倾向于扩大规制，而忽视了效益。

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Unfortunately, these models are fundamentally flawed in being biased to favor corrosive price promotion over brand-building advertising and to favor advertising cost efficiency over sales-growth effectiveness.

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Because of this line of reasoning, managers or technical leads sometimes over-correct and attempt to maximize efficiency by staffing single-person projects to reduce the communication overhead down to zero.

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And if you want to talk about market dynamics at the pump, then look no further than the increase in demand for hybrid cars, which can increase fuel efficiency over other mid-sized cars with the help of an electric engine.

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