劍橋詞典to deceive someone by working only for your own advantage in the (usually illegal ) activities you have planned together 欺騙（幫兇），蒙騙（同伙） The diamond thief double-crossed his partners and gave them only worthless fake jewels . 鉆石大盜欺騙了同伙，給了他們一錢不值的假珠寶。 返回 double-cross