back out片語動詞KK [bæk aʊt] /bæk aʊt/發音片語動詞1退出、反悔、打退堂鼓He backed out of the deal at the last minute.他在最後一刻退出了這筆交易。2食言、不守承諾You promised to help, so please don't back out now.你答應要幫忙,現在別食言。3倒車駛出、倒著開出可拆開She backed the car out of the narrow garage.她把車倒出了狹窄的車庫。