translation.en: You know, in primates, there is this phenomenon called sexual dimorphism, which simply means males are larger than females and males have larger teeth than the females.
translation.zh: 大家知道，在灵长类动物中，有一种现象 叫做两性异型，简单来讲就是 男性要比女性要大一些， 男性的牙齿要比女性更大。