柯林斯词典passive smoking 1. N-UNCOUNT Passive smoking involves breathing in the smoke from other people's cigarettes because you happen to be near them. 被动吸烟 ...the dangers of passive smoking. ...被动吸烟的危害。 返回 passive smoking剑桥词典the unwanted breathing in of other people's cigarette smoke , especially by people who do not smoke 被动吸烟，吸二手烟 Doctors say passive smoking has caused his lung cancer . 医生说被动吸烟导致他患上了肺癌。 返回 passive smoking