2. But the strategy of these arrested adolescents has a disquieting aspect: they
copulate forcibly with females. In other words, they rape.
但是,这个策略有个令人忧虑的面相:发育迟滞的青少年雄性红毛猩猩为了与雌性交配,会使用暴力。
3. Almost 40 percent of the male population engages in a form of homosexual activity and a small percentage don't ever
copulate with females.
大约40%的雄性会参与某种形式的同性行为,而少数从不与雌性有性行为。