因此，偏爱高脂肪食物和高酒精含量的饮料本应对生存也是至关重要的。
Thus, a preference for food with a higher fat and alcohol content would have been important for survival.
生产生物柴油时，植物油中的脂肪需要与一种酒精作用——通常为甲醇——生成生物燃料分子。
To make biodiesel, fats in the vegetable oil are reacted with a form of alcohol-usually methanol-to form the biodiesel molecule.
人的平均寿命如果就三四十岁的话，那么我们今天所看到的脂肪和酒精的负面效应也就无关紧要了。
The negative effects of fat and alcohol we see today would not have mattered so much then as life expectancies were between 30 to 40 years.
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