他在全球访问时，不但与最高决策者对话，而且每天力图与民众交谈，询问他们的生活情况。
He talked to the top decision-makers, but sought out everyday people to ask about their lives, as he traveled the world.
询问他们的生活。
除了询问他们的吸烟量，饮食和其他生活方式外，研究人员还采集了他们的血及尿样。
In addition to asking them how much they smoked, what they ate and other lifestyle factors, the researchers collected blood and urine samples.
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