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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Former smokers, or those who smoked less than half a pack per day, did not appear to be at increased risk.

曾吸烟的人或者每天吸烟低于半包的人看起来不处于增加的风险中。

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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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The only problem was, nobody at the station had an arm small enough to actually reach in through the two-and-a-half inch opening and pack grease around the bearing.

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Northampton continued to work hard and their second try came midway through the half as the pack drove over from a lineout, Tonga'uiha coming up with the ball.

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