One had to quit abruptly on a given day, going from about a pack a day to zero.

吸烟者必须从某天开始突然戒烟，从一天一包烟到再也不抽烟。

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Likewise, a married man who smokes more than a pack a day is likely to live as long as a divorced man who doesn't smoke.

同样，一天抽一包烟以上的已婚男人，寿命可能和不吸烟的离婚男人一样长。

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Twin B smoked half a pack a day for 14 years, while her sister never

双胞胎之一B，每天吸半包烟达14年之久。 她的姐姐A从未吸烟。

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In a recent study, undergrads who smoked at least a half-pack a day on average were asked to keep track of their smoking for several weeks.

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This "risk-based pricing" means that if you treat your body like a temple you pay less for health care than your counterpart who overeats and smokes a pack a day.

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Men who'd smoked a pack a day for 40 years -- or, equivalently, two packs a day for 20 years -- were 82% more likely to succumb to prostate cancer than men who had never smoked.

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