英 [kəʊˈɪʃən] 美 [koʊˈɪʃən]
n. 交媾，性交
the act of sexual procreation between a man and a woman; the man's penis is inserted into the woman's vagina and excited until orgasm and ejaculation occur
同义词： sexual intercourse / intercourse / sex act / copulation / coitus / sexual congress / congress / sexual relation / relation / carnal knowledge
交配
交配
性交
交媾，性交
After coition, all animals are sad, as the Romans used to say.
就像罗马人曾说的那样，豪情过后，任何一种动物都会感觉悲伤。