There is no safe level of exposure to second-hand tobacco smoke.
关于二手烟草烟雾，不存在安全接触水平。
There is no safe level of second-hand tobacco smoke.
二手烟草烟雾没有安全标准。
If you smoke and drink, then your risk level increases.
如果你吸烟又喝酒，那么你的风险又会上升。
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。
Your goal is to reach the next level and fight even more smoke.
你的目标乃是达到下一个水平，与更多烟作斗争。
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。
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。
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