单词	double down
释义	double down verb doubled down; doubling down; doubles down intransitive verb 1 : to double the original bid in blackjack in exchange for only one more card 2 : to become more tenacious, zealous, or resolute in a position or undertaking the administration needs to double down on the call for political reform Washington Post Word History First Known Use 1949, in the meaning defined at sense 1
随便看	commedia eru commedia erudita commedia eruditas commedias eruditas commelina commelina blue Commelinaceae commelinaceaes commelinaceous commelinae commelinaleses commelinalesses commelinas commelinidaes commem commemorable commemorate commemorated commemorates commemorating commemoration commemorations commemorative commemoratively commemoratives

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