dollarize
verb(British English also dollarise)
[transitive, intransitive](of a country )国家 to start using the US dollar as its own currency (使)美元化 The country was forced to dollarize because its national currency collapsed. 由于本国货币崩溃,该国被迫实行美元化。 - dollarize something
to dollarize the economy 使经济美元化