慢速英语:China's Factories Break Air Pollution Rules

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smog – n. fog mixed with smoke : a cloud of dirty air from cars, factories, etc., that is usually found in cities

textile – n. a fabric that is woven or knit

efficiency – n. the ability to do something or produce something without wasting materials, time, or energy : the quality or degree of being efficient

reward – v. to give money or another kind of payment to (someone