★英語聽力頻道為大家整理的初中英語聽力訓練下載：二手煙，供大家參考。更多閱讀請查看本站英語聽力頻道。
Secondhand smoke is the combination of “sidestream” smoke (the smoke given off by a burning tobacco product) and “mainstream” smoke (the smoke exhaled by a smoker).
二手煙包括“側流煙”（煙草產(chǎn)品燃燒釋放的煙）和“主流煙”（吸煙者呼出的煙）。
People can be exposed to secondhand smoke in cars, the workplace, and public places, such as bars and recreational settings. The source of most secondhand smoke is from cigarettes.
人們可能在汽車、工作場所和公共場所，如酒吧和娛樂場所，暴露于二手煙之下。大部分二手煙來自香煙。
Does secondhand smoke contain harmful chemicals? Yes. Among the more than 7,000 chemicals that have been identified in secondhand tobacco smoke, at least 250 are known to be harmful, for example, hydrogen cyanide, carbon monoxide, and ammonia. At least 69 of the toxic chemicals in secondhand tobacco smoke cause cancer.
二手煙是否含有有害化學物質？是的。已確定二手煙的煙霧中含有超過7千種化學物質，其中至少250種是有害的，比如氰化氫、一氧化碳和氨。二手煙中至少69種有毒化學物質會導致癌癥。
英語單詞：
sidestream n. 側流煙（指從香煙或雪茄煙燃端飄出的煙）
exhale vt. 呼氣；發(fā)出；發(fā)散
cyanide n. [無化] 氰化物
ammonia n. [無化] 氨
Secondhand smoke is the combination of “sidestream” smoke (the smoke given off by a burning tobacco product) and “mainstream” smoke (the smoke exhaled by a smoker).
二手煙包括“側流煙”（煙草產(chǎn)品燃燒釋放的煙）和“主流煙”（吸煙者呼出的煙）。
People can be exposed to secondhand smoke in cars, the workplace, and public places, such as bars and recreational settings. The source of most secondhand smoke is from cigarettes.
人們可能在汽車、工作場所和公共場所，如酒吧和娛樂場所，暴露于二手煙之下。大部分二手煙來自香煙。
Does secondhand smoke contain harmful chemicals? Yes. Among the more than 7,000 chemicals that have been identified in secondhand tobacco smoke, at least 250 are known to be harmful, for example, hydrogen cyanide, carbon monoxide, and ammonia. At least 69 of the toxic chemicals in secondhand tobacco smoke cause cancer.
二手煙是否含有有害化學物質？是的。已確定二手煙的煙霧中含有超過7千種化學物質，其中至少250種是有害的，比如氰化氫、一氧化碳和氨。二手煙中至少69種有毒化學物質會導致癌癥。
英語單詞：
sidestream n. 側流煙（指從香煙或雪茄煙燃端飄出的煙）
exhale vt. 呼氣；發(fā)出；發(fā)散
cyanide n. [無化] 氰化物
ammonia n. [無化] 氨