red·shirt
noun/ˈredʃɜːt/
/ˈredʃɜːrt/
(North American English)- a college sports player who does not play for one year in order to be allowed to play for an extra year later
红衫军：大学体育运动员，一年不参加比赛，以便一年后再玩 - He sat out last season as a redshirt.
上赛季他作为红衫军缺席比赛。
- He sat out last season as a redshirt.