加利佛尼亚大学干细胞研究中心主管，他的实验室正在进行此项研究。他说：“正因为如此，许多人认为电子烟是安全的，完全可以替代传统香烟。”
"As a result, some people believe that e-cigarettes are a safe substitute for conventional cigarettes," said Prue Talbot, the director of UC Riverside's Stem Cell Center, whose lab led the research.
什么是电子香烟？它们比传统香烟安全吗？
What are electronic cigarettes? Are they safer than conventional cigarettes?
制造商声称电子香烟是一种安全的香烟替代品。
Manufacturers claim that electronic cigarettes are a safe alternative to conventional cigarettes.
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