电子香烟(E-cigs)的设计原理是在电子水烟溶液中递送尼古丁，而不是通过烟雾，也没有烟草燃烧的装置。
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...电子烟（e-cigs），自2008年以来已经活跃在美国市场上了，并在最近几年得到广泛使用。
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That said it is far too early for any declaration that e-cigs are completely benign for our health.
FORBES: Altria Group: E-Cigarettes Or Die?
The new assertiveness comes as tobacco analysts have started to acknowledge that growing demand for "e-cigs" in the US is peeling away customers from tobacco giants such as Altria, Lorillard and RJ Reynolds.
CNN: Sales of e-cigarettes continue to soar
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