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1. The three-way emission control system is designed toreduce emissions from vehicles.
三向排放控制系统旨在减少车辆的排放。
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2. The newthree-way emission controltechnology will significantly improve air quality.
新的三向排放控制技术将显著改善空气质量。
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3. The company has implemented a three-way emission control system in its plantsto comply with environmental regulations.
该公司在其工厂实施了三向排放控制系统，以符合环境法规。