double down片語動詞KK [ˋdʌbəl daʊn] /ˈdʌbəl daʊn/發音片語動詞1變本加厲、更加堅持、死不認錯Instead of apologizing, he doubled down on his original claim.他不但沒有道歉,反而更加堅持原來的說法。2加倍投入、加大力度The company is doubling down on clean energy this year.公司今年將加倍投入清潔能源領域。3加倍下注紙牌遊戲He doubled down with eleven and drew a perfect ten.他拿到十一點時加倍下注,結果抽到一張十點。