three-legged race
noun [ C ] uk/ˌθriːˈleɡ.ɪd ˌreɪs/ us/ˌθriːˈleɡ.ɪd ˌreɪs/
（一人右腿和另一人左腿绑在一起的）三足赛跑，绑腿跑
a race in which the right leg of one person is tied to the left leg of another person, and the two people run together as if they had three legs