第二 [dì èr]n. second缩写：2nd双语例句：1.他获胜进入第二轮比赛。He advanced into the second round. 2.这位冠军在第二回合把挑战者击倒。The champion decked the challenger in the second round. 3.她在剧中兼演两角，第一幕中演秘书，第二幕中演招待员。She doubled as the secretary in the first act and the receptionist in the second.