copulation
  連結,交配,交尾
  cop·u·la·tion /ˌkɑpjəˈleʃən/ 名詞
  性交,交媾,接合(作用),核融合,(細胞)核結合
  Cop·u·la·tion n.
  1. The act of coupling or joining; union; conjunction.
     Wit, you know, is the unexpected copulation of ideas.   --Johnson.
  2. The coming together of male and female in the act of generation; sexual union; coition.
  ◄ ►
  copulation
       n : 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 [syn: sexual
           intercourse, intercourse, sex act, coitus, coition,
            sexual congress, congress, sexual relation, relation,
            carnal knowledge]