汽车上的触媒转换器大大地改善洛杉矶的空气质量。
The catalytic converter on automobiles greatly improved the air quality of Los Angeles.
欧盟国家因为汽车制造行业高度集中，将主要面临触媒转换器生产短缺。
European Union consumers would face shortages mainly in manufacturing of catalytic converters, given the high concentration of auto-making in the region.
在美国，受创最为严重的是触媒转换器制造商。其次是合金与陶瓷生产行业。
In the United States, manufacturers of catalytic converters would suffer the most, followed by the metal alloying and ceramic-making sectors.
在美国，受创最为严重的是触媒转换器制造商。其次是合金与陶瓷生产行业。
In the United States, manufacturers of catalytic converters would suffer the most, followed by the metal alloying and ceramic-making sectors.
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