secondhand smoke短语⁷⁴³⁶³ 基本例句 被动吸入的烟 Harvard School of Public Health report issued last year said secondhand/span> smoke in cars can be up to10 times more of a health risk than secondhand smoke in a home. 哈佛公共卫生学院在去年称在车内的二次吸烟的危害是在屋里吸烟危害的10倍。 blog.sina.com.cn