【英语时差8,16】三手烟（下）

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.

1 risky   

adj.有风险的，冒险的

参考例句：

• It may be risky but we will chance it anyhow.这可能有危险，但我们无论如何要冒一冒险。
• He is well aware how risky this investment is.他心里对这项投资的风险十分清楚。

2 potent   

adj.强有力的，有权势的；有效力的

参考例句：

• The medicine had a potent effect on your disease.这药物对你的病疗效很大。
• We must account of his potent influence.我们必须考虑他的强有力的影响。

3 residue   

n.残余，剩余，残渣

参考例句：

• Mary scraped the residue of food from the plates before putting them under water.玛丽在把盘子放入水之前先刮去上面的食物残渣。
• Pesticide persistence beyond the critical period for control leads to residue problems.农药一旦超过控制的临界期，就会导致残留问题。