to engage in sexual intercoursewere both in the mood to do it
were both in the mood to do it
bred, copulated, mated, slept
fooled around, fornicated
had sex
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。