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.
互联网
He then made the action of copulation and broke the big stone.
说著就做出交媾的动作,把石头弄破.
互联网
For Darwin, mate choice simply stopped at copulation.
对达尔文来说, 择偶仅仅停留在交尾.
互联网