In addition to pollution and traffic jams, auto safety is a critical issue in developing nations.

除了污染和交通堵塞，汽车安全也是发展中国家面临的一个关键问题。

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Auto-catalyzed ethanol-water pulping is one kind of organosolv pulping; it can completely solve the pollution problem of conventional chemical pulping.

自催化乙醇制浆是溶剂法制浆的一种，可彻底解决传统化学制浆的污染问题。

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Cities across the U. S. are cracking down on air pollution by enforcing auto emissions control, limiting the use of wood burning stoves, and by monitoring factory pollution.

美国各地的城市都在治理空气污染，做法是控制汽车废气排放、限制使用薪柴炉和监测工厂污染。

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Not only do commuters in Southern California inhale the worst year-round particle pollution levels, but Riverside drivers also face the highest rate of fatal auto accidents per capita, and Los Angeles drivers spend the most time sitting in traffic.

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