And one reason we are optimistic is because we see the bright and real potential for our citizens to be able to use alternative sources of energy that will promote the common good.

我们感到乐观的一个原因就是，我们看到了我们的公民得以使用替代能源的光明而又真实的前景，那对大家都有好处。

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As a technician in this field, you will evaluate the energy use patterns of residential and commercial buildings, recommend alternative energy solutions, and install or retrofit systems as needed.

作为这个领域的技术专家，你能计算出居民住宅和商业建筑物的能源使用模式，推荐各种各样的能源解决方式，以及根据需要安装或翻新系统。

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The solar industry is growing about 30% a year, fueled by new government policies in the U. S., China and dozens of other countries wanting to boost alternative-energy use.

在美国、中国等数十个国家推广替代能源的新政策推动下，太阳能行业的年增长速度达到了30%左右。

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The investment we are making today will create a newer, smarter electric grid that will allow for the broader use of alternative energy.

CNN: Obama's remarks on signing the stimulus plan

Our military leaders recognize the security imperative of increasing the use of alternative fuels, decreasing energy use, reducing our reliance on imported oil, making ourselves more energy-efficient.

WHITEHOUSE: Energy Security and Independence

Both have strongly championed the use of federal loan guarantees to boost alternative energy projects.

WSJ: U.S. Weighs Funding for Renewable Energy Projects