1、To live together in a sexual relationship when not legally married.
未婚同居無法定婚姻住在一起，有性關(guān)系

2、To live together in a sexual relationship when not legally married
未婚同居無法定婚姻住在一起，有性關(guān)系

3、a woman who has an ongoing extramarital sexual relationship with a man
正在與一個(gè)男人私下通奸的女人。