A statewide crackdown on dirty diesel lorries and a push to expand use of zero-emission vehicles are also a big part of the story.

另外一个重要原因是在全国范围内强制取缔不清洁的柴油卡车以及扩大零排放车辆的使用。

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Authors use graphic aids to illustrate and expand on concepts taken up in the text because graphics are yet another way of portraying relationships and clarifying connections.

作者使用图形辅助来说明和扩展文本中的概念，因为图形是描述关系和阐明联系的另一种方式。

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Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that expand over time and let in more outside air.

1939年以前建造的房屋每平方英尺消耗的能源比2000年以后建造的房屋多50%，这主要是由于微小的裂缝随着时间的推移而扩大，更多的外部空气进入了裂缝。

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The report says new ways to expand the use of treatments are now being developed.

VOA: special.2009.11.17

These are examples of Biomedical Engineering of the future that expand on what we currently use, which involves to no small extent, technology like this.

这些将会是,生物工程领域未来的发展,它根植于现有技术,包括了很多像这样广泛使用的技术

耶鲁公开课 - 生物医学工程探索课程节选

Internet use continued to expand. Most people said they watch several television news sources, with Al Jazeera as their first choice.

VOA: standard.2010.08.06

ProLogis plans to expand use of these vehicles in the future.

FORBES: Magazine Article

The U.S. military plans to use the prototype with a small group of soldiers first before deciding whether to expand its use of the technology, Taussig said.

CNN: HP developing a 'Dick Tracy' wristwatch

The interesting long-term question: how can Microsoft expand the use of Kinect beyond gaming?

FORBES: Microsoft Connects With Kinect; Analyst Sees $2 Billion Market In First Year