copulation [ˌkɒpjʊ'leɪʃn]

例句:

• Interested, he wiggles his tail, nibbles her neck and strokes her flanks until copulation begins.
  来自BBC
• The reproductive system has a complex innervation concerned in copulation and oviposition.
  生殖系统有一个同交尾和产卵有关的复杂神经系统.
  
• The black widow kills her mate immediately after copulation.
  黑寡妇蜘蛛会在交配之后马上杀了她的配偶.
  
• Bonobos go the furthest in same - sex bonding with regular copulation among males.
  倭黑猩猩在同性关系方面步子迈得更大,他们雄性之间经常交媾.
  
• In that interregnum, don't focus on the copulation but the causation.
  来自MSN
• But often copulation is without the female's consent and she is raped by a sore loser.
  来自BBC