摘要
二手烟的危害已是众所周知。然而，“三手烟”的．说法就不那么流行了。其实“三手烟”指的是烟雾散去后残留在头发、衣服、靠”垫、地毯等处的气味和烟尘颗粒。这些东西对儿童健康的危害如今已经为波士顿的科学家所证实。
Parents who smoke often open a window or turn on a fan to clear the air of second-hand smoke, but experts now have identified another smoking-related threat to children＇s health that isn＇t as easy to get rid of： third-hand smoke. That＇s the term being used to describe the invisible yet toxic brew of gases and particles clinging that lingers hair and clothing, not to mention cushions and carpeting, long after smoke has cleared from a room. The residue includes heavy metals, carcinogens and even radioactive materials that young children can get on their hands and ingest, especially if they＇re crawling or playing on the floor.
