疾病控制和预防中心也建议重视二手烟和一些常见的耳部感染之间的关系。
The Centers for Disease Control and Prevention's recommendations also highlight the relationship between secondhand smoke exposure and some common ear infections.
《烟河》继承了上本书的故事情节和部分人物，他们从加尔各答往中国去，到达位于珠江三角洲的港口城市、今天中国的商业中心——广州。
“River of Smoke” takes the story, and some of the first book’s characters, from Calcutta to the port-city of Canton (now called Guangzhou) on the Pearl River delta, then and now, China’s emporium.
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.
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