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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We should also point out that with the simple objects used in our example, there wasn't much space efficiency gained by using the binary pickle format.

我们还应该指出，在我们的示例中使用的都是简单对象，因此使用二进制pickle格式不会在节省空间上显示出太大的效率。

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

ECONOMIST: The invisible green hand

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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