柯林斯詞典tear gas /t??/ 1. N-UNCOUNT Tear gas is a gas that causes your eyes to sting and fill with tears so that you cannot see. It is sometimes used by the police or army to control crowds. 催淚瓦斯 Police used tear gas to disperse the demonstrators. 警察動(dòng)用了催淚瓦斯來(lái)敺散示威人群。 返回 tear gas劍橋詞典a gas used by some police and armed forces to control crowds of people . It hurts the eyes and makes them produce tears . 催淚瓦斯，催淚性毒氣 返回 tear gas