杰克逊说她的老板变得越来越抑郁，又重新大量吸烟了。
Jackson said her boss became increasingly depressed and reverted to smoking heavily.
该研究的作者调查了12395名学生并分析了九种危险行为，包括过度使用酒精、非法使用毒品、大量吸烟、频繁使用媒体和逃学。
The study's authors surveyed 12,395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking, high media use and truancy.
吸烟还将消耗大量营养物质，包括帮助保护和修复皮肤损伤的维他命c。
Cigarette smoking also depletes many nutrients, including vitamin c, which helps protect and repair skin damage.
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