花园蜗牛新陈代谢进化缓慢。
如罗格斯大学人类学家莱昂内尔·泰格所说，人类新陈代谢“没有为优质牛肉进化，但是，你会推测，它也没有为吃成堆的白米饭和面条进化。”
As Rutgers University anthropologist LionelTiger puts it, human metabolism "did not evolve for prime beef, but, one would surmise, neither did it evolve to eat heaping plates of whiterice and pasta."
我们本以为刺背鳄蜥应该进化得很慢，就像它们做什么事都很慢一样——长得慢，繁殖慢，新陈代谢也慢。
Of course we would have expected that the tuatara, which does everything slowly — they grow slowly, reproduce slowly and have a very slow metabolism — would have evolved slowly.
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