单词	medium of exchange
释义	medium of exchange noun phrase : something commonly accepted in exchange for goods and services and recognized as representing a standard of value Word History First Known Use 1714, in the meaning defined above
随便看	did in did it did out of did the trick did up did without didact didactic didactic analysis didactical didactically didacticism didacticisms didactics didactive didacts didactyl Didactyla didactyle didactylism didactylous didactyls didakais didanosine didapper

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