各种干预措施，如抗感染药物，可以增加人口的平均存活时间，但只有那些减缓人体衰老速度的方法才能延长最长寿命。
Various interventions, such as infection-fighting drugs, can increase a population's average survival time, but only approaches that slow the body's rate of aging will increase the maximum lifespan.
他们包括平均寿命只有11.6天的桡脚类的动物（一种小的甲壳类动物）非洲的汤氏纺锤水蚤，和可以存活74年的珍珠胎贝(珠母贝)。
They included cold-blooded organisms that ranged in average lifespan from 11.6 days for the copepod (small crustaceans) Arcartia tonsa to 74 years for the pearl mussel (Margaritifera margaritifera).
研究人员利用转基因技术，让两组老鼠患上癌症，结果证明，食用紫番茄的老鼠平均存活182天，食用标准食物的老鼠平均寿命为142天。
Mice genetically engineered to develop cancer lived an average of 182 days when they were fed the purple tomatoes, compared to 142 days for animals on the standard diet.
寿命在7天内的个体，存活期间平均体重增量为负值，而存活7天以上的个体则平均增重明显。
Individuals that lived less than 7 days lost weight over their lifetime, while those living more than 7 days significantly increased in weight.
寿命在7天内的个体，存活期间平均体重增量为负值，而存活7天以上的个体则平均增重明显。
Individuals that lived less than 7 days lost weight over their lifetime, while those living more than 7 days significantly increased in weight.
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