threesome
/ˈθriːsəm/noun [集合/集体] 三人一组；三人的竞赛；一人对两人的比赛
One in 10 people claims Tracey Cox have had a threesome in their early twenties. 特蕾西·考克斯宣称10个人中有1个宣称他们曾试过三人行。
adjective [原级] 三倍的；三人一组的
The threesome remained close, even sending out holiday cards signed, “Warren, Susan and Astrid.” 三个人保持很近的关系，甚至在发出的节日贺卡上签字为“沃伦、苏珊和艾斯翠”。
