v.交媾；交配；交尾
Mary did not want to copulate with her boyfriend before marriage 玛丽不愿在结婚前与她的男朋友发生性关系。
The male bird performs a sort of mating dance before copulating with the female. 这种雄鸟在与雌鸟交尾以前要跳一种交欢舞。
