No secondhand smoke production.
无二手烟的产生。
In particular, their odds of being sensitized to cat dander were double that of children with no secondhand smoke exposure at 2 months of age.
特别是，他们对猫毛屑过敏的几率是2个月大未被动吸烟儿童的两倍。
There is no safe level of secondhand smoke for nonsmokers. Don't expose your children to secondhand tobacco smoke.
别让你的孩子吸二手烟。
Concentrations were higher and almost universally detected among infants born to active smokers compared to women with secondhand or no exposure.
与吸二手烟或没接触烟草的人相比，几乎全部的主动抽烟者的婴儿的胎粪代谢物的浓度比较高。
Levi's are also, Bergh said, the No. 1 brand in secondhand apparel stores.
伯格说，李·维斯也是二手服装店的头号品牌。
There is no risk-free level of exposure to secondhand smoke.
没有风险的二手烟含量是不存在的。
The surgeon general says there is no safe level of exposure to secondhand smoke.
外科主治医生说没有对揭漏的被动吸烟的安全级别定论。
"This means that no level of smoking, or exposure to secondhand smoke, is safe," says Dr.
“这意味着零吸烟水平或不接触二手烟是安全的，”Crystal博士说。
"This means that no level of smoking, or exposure to secondhand smoke, is safe," says Dr.
“这意味着零吸烟水平或不接触二手烟是安全的，”Crystal博士说。
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