double up片語動詞KK [ˋdʌbəl ʌp] /ˈdʌbəl ʌp/發音片語動詞1加倍、增倍We doubled up on security after the break-in.闖空門事件後,我們把安全措施加倍。2彎下身、笑彎腰、痛得彎腰She doubled up with laughter at his terrible impression.他那蹩腳的模仿讓她笑彎了腰。3合住、同住一室、共用The hotel was full, so we had to double up.旅館滿房了,我們只好兩人合住一間。4兼作、兼任、兼用The sofa doubles up as a bed for guests.那張沙發可以兼作客人的床。5對折、折疊可拆開Double the blanket up so it fits in the bag.把毯子對折,這樣才放得進袋子裡。