最新的研究揭示了香烟中主要有效成分-尼古丁是如何作用于大脑，抑制吸烟者的食欲。
New research reveals how nicotine, the active ingredient in cigarettes, works in the brain to suppress smokers' appetites.
在过去10年，烟草公司改变了香烟的设计和成分，使它们对第一次吸烟的人更有吸引力，使长期吸烟的人更容易上瘾。
Over the past decade, companies have made changes to the design and ingredients in cigarettes to make them more alluring to first-time smokers, and more addictive for long-time smokers.
为了研究香烟中的成分是怎样影响人类DNA的，赫克特和他的研究小组对12名志愿者进行了 PAH，即多环芳烃追踪。
To study how a cigarette's contents impact human DNA, Hecht and his team used 12 volunteers to track PAHs, or polycyclic aromatic hydrocarbons, which are pollutants found in tobacco smoke.
松弛的皮肤香烟中含有4000多种化学成分，其中大部分物质都会伤害人体的骨胶原和弹。
Sagging Skin There are more than 4,000 chemicals in tobacco smoke, and many.
香烟中含有4000多种化学成分，其中大部分物质都会伤害人体的骨胶原和弹。
There are more than 4,000 chemicals in tobacco smoke, and many.
现在已知这种气体是香烟烟雾中最有害的成分之一。
This gas is now known to be one of the most harmful ingredients in cigarette smoke.
目的研究滤嘴中加入姜黄素对香烟主流烟气的抗突变作用及其对主要诱变成分的滤除作用。
Objective To observe the antimutagenicity and filter effect of the main mutagens in mainstream of cigarette smoke by adding curcumin in the filter.
香烟含有很多影响健康的化学成分，这是众所周知的事实。
(contain; chemicals; affect) It is a well known fact that cigarettes contain many chemicals that will affect your health.
香烟含有很多影响健康的化学成分，这是众所周知的事实。
(contain; chemicals; affect) It is a well known fact that cigarettes contain many chemicals that will affect your health.
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