At one end of the chart were simple efficiency improvements which would both cut CO2 and save money; at the other end were costly technologies like nuclear power and carbon capture.

在图标的一端是一些不仅能减少二氧化碳排放量还能减少预算的简单而高效的改进措施。在另一端，那些措施却用到了花费昂贵的高科技术，如和能源和碳捕获。

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This is not just a matter of simple justice (although it is that, too). It is also a matter of efficiency.

这不仅是一个公平问题(尽管它也是)，还是一个效率问题。

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She says the first improvements that will be made to the existing reactor will be to improve the insulation to help stop heat loss, a simple move that she expects to treble the current efficiency.

她表示，现有反应器第一个需要改进的地方是改善其绝缘性，以便阻止热能流失。她期待这一简单的改进能够使反应器的利用率翻两倍。

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Robert Stavins of Harvard University argues that the thorny notion of sustainable development can be reduced to two simple ideas: efficiency and intergenerational equity.

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The answer is simple: capital efficiency .

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Hawker Beechcraft has kept the aircraft simple and reliable while adding advanced technology to improve efficiency, safety and functionality.

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