单词	trade up
释义	trade up verb traded up; trading up; trades up intransitive verb 1 : to trade something in (something, such as an automobile) for something more expensive or valuable of its kind 2 : to stock or purchase higher-priced items Word History First Known Use 1905, in the meaning defined at sense 2
随便看	played about played along played around played at played back played ball played by the rules played down played ducks and drakes with played hooky played into played off played on played on or upon played out played their hearts out played to played up played upon played with player player piano players playest Playfair cipher

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