How much being pregnant contributes to cavities could be tested, says Larsen, by comparing the incidence of tooth decay in women and men in modern populations before and after boosts in fertility.
Larsen说，通过对生育率提高前后现代人口中妇女和男子蛀牙发病率的比较，就能够测出多少龋齿是由正在怀孕的妇女贡献的。
Stone does not decay, and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
石头是不会腐烂的。因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。
Stone does not decay, and so the tools oflong ago have remained when even the bones of the men who made them havedisappeared without trace.
石头是不会腐烂的。因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。
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