New Page 2 关键词： 根寿命；根系呼吸强度；相关性 [gap=1571]Key Words: root lifespan,root respiration intensity,correlation
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研究测定出，每吸一根烟平均寿命折损11分钟，这就意味着成为一名烟民50岁过后将预期寿命会缩短4年。
research has determined that every cigarette decreases one's life expectancy by 11 minutes, and being a smoker shaves four years off of one's life expectancy after 50.
他解释说：“头发有近七年的寿命，我们平均每天约脱落120根头发，从而腾出空间长出新的头发。”
He explains: 'hair has a lifespan of approximately seven years and on average we lose around 120 hairs a day to make way for new ones to grow.
事实上一项研究发现，没有朋友也会减少你的寿命，效果相当于1天抽15根烟。
In fact, a study found that having few friends affects your longevity as much as smoking 15 cigarettes a day.
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