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人们说,吸烟好比慢性自杀,而被动吸烟。更可怕。每年都有数以万计的人死于自己的朋友或亲人吐出的烟雾! 被动吸烟又叫作“吸二手烟”。吸烟所散发的烟雾,可分为主流烟雾和支流烟雾,主流烟雾是吸烟者吸入口内的烟,支流烟雾是吸烟时向外冒出的烟。吸一支烟要散发出2000毫升烟
People say that smoking is like chronic suicide and passive smoking. More terrible. Every year, tens of thousands of people die from smoke from their friends or relatives! Passive smoking is also known as “secondhand smoke.” The smoke emitted by smoking can be divided into mainstream smoke and tributary smoke. The mainstream smoke is the smoke that the smoker smokes in the entrance, and the tributary smoke is the smoke that comes out when smoking. To smoke a cigarette to emit 2000 ml of smoke