It's the only possible explanation of why humans, if they're very unlucky, can become grossly obese, in a way that would be totally impossible for any other primate, physically impossible.
这唯一能够解释为什么人类 如果很不幸的话 会变得非常肥胖 可以说对于其他灵长类动物来讲，变得如此肥胖是生理上绝对不可能的