double-header
/ˈdʌblˈhedə(r)/noun
1
- a train pulled by two locomotives coupled together双机牵引列车。
2
- chiefly N. Amer. a sporting event in which two games or contests are played in succession at the same venue, typically between the same teams or players〈主北美〉（常指相同的两个球队或选手之间）在同一场地连续进行的两场比赛。