In addition, clean air consumption will make the operation of the system has greatly increased.

另外，洁净空气的消耗将使系统的运行大大增加。

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Air is compressed and sent through a clean-up system where moisture, carbon dioxide, and hydrocarbons are removed.

空气通过一个去除了水蒸汽、二氧化碳和碳氢化合物的清洁系统压缩和输运。

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In-car air circulation system can't entirely clean up dirty air lingering in cabins.

车内空气循环系统不能彻底地清除逗留在车内的污浊空气。

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We believe our industry is capable of meeting these clean air rules while maintaining electric system reliability.

WHITEHOUSE: Energy and Environment Latest News | The White House

London still has a lot going for it an efficient legal system, a clean polity, some brilliant schools and universities, clean air, beauty, fun and fairly safe streets.

ECONOMIST: London��s future

In economic terms, either system would dwarf the impact of previous big environmental laws, such as the Clean Air Act.

FORBES: Magazine Article