catalytic converter
noun [ C ] engineering specialized uk/ˌkæt.ə.lɪt.ɪk kənˈvɜː.tər/ us/ˌkæt̬.ə.lɪt̬.ɪk kənˈvɝː.t̬ɚ/
(汽车上的)催化式排气净化器
a device on a car that reduces the amount of poisonous gas that is released from the exhaust
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