Using alternative fuels and improving energy efficiency is thus both an ecological necessity and a technological challenge.

因此，使用替代燃料和提高能源效率既是生态需要，也是技术挑战。

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A Lot of Scope Seen for Improving Energy efficiency.

在提高能源使用效率方面还有很大潜力。

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The biggest chunk, around a quarter, is going on improving energy efficiency.

其中最大的一笔开销，其四分之一的金额将用于提高能源利用率。

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The promise of the concessional loans further China's investment in the continent, aimed at improving such infrastructure as roads and energy production as well as developing agriculture and undertaking health and education initiatives.

VOA: standard.2009.11.08

On other fronts, there is no one solution to improving energy security or the demand for energy.

FORBES: Adnan Shihab-Eldin

In the face of such intense pressure from many different directions, few CIOs attempt to argue against improving energy management practices.

FORBES: Evaluating Energy Management Maturity: A Checklist for CIOs

Smart software systems can analyze building information for trends and comparisons, and feed the results back into ever-improving energy reduction strategies.

FORBES: The Next Bright Idea: Software For Lighting