1. To copulate with(a ewe). Used of a ram. 这母羊只产了一个羊羔。
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。
