【英语时差8,16】三手烟（下）

（单词翻译）

So if you’re in a house or car where people smoke and you brush up against a wall, rug, or furniture, your skin could come into contact with dangerous chemicals. Third-hand smoke is especially risky¹ for infants and toddlers, who are most likely to roll around on smoke soaked carpets. It’s not yet clear how potent² smoke residue³ is, or how likely it is to cause diseases like cancer. But the study suggests that third-hand smoke may indeed pose a threat. And once smoke soaks into a surface, it’s usually there to stay. So unless you want smokey residue on your skin, it’s best to avoid places where people light up.