Improving efficiency is doable and industrial users have done it, cutting the amount of water needed to make each tonne of steel and each extra unit of GDP in most rich countries (see first chart).

要改善用水效率是绝对可行的，且富裕国家的工业人士早就在做，为每一顿钢铁节省用水，以增加国民所得的每一个单位(见下图)。

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As you start to implement Web applications as true applications that require significant data manipulation, a rich client design can greatly improve user efficiency.

如果您开始作为需要大量数据处理的真正的应用程序实现Web应用程序，富客户机的设计可以极大提高用户效率。

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In Britain, as in most rich countries, the average efficiency of coal-fired power stations is about 35%.

同大多数富国一样，英国燃煤发电站的平均燃烧效率在35%左右。

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Yet it is a tangled mess, increasingly reliant on regressive taxes, such as the payroll tax, and full of subsidies that benefit rich people while reducing economic efficiency.

ECONOMIST: The Democrats need to posture less and think harder

Rich had seemed to her such a tower of efficiency and competence, so vigorous and firm a presence that she had always believed, quite unreasonably, that he would survive her.

NEWYORKER: Free Radicals

Clean-tech executives were encouraged by commitments to improve energy efficiency made by India and China, as well as a promise by rich countries to funnel billions to poor ones to pay for green investments.

ECONOMIST: Business comes to terms with a disappointing outcome