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(infml 口) (a) stop doing sth; give up or abandon sth 不再做某事; 放弃某事物: Business is terrible I might as well pack up. 生意很不好做--我还是关门算了. (b) (of a machine, engine, etc) stop working or operating; break down （指机器、 发动机等）不工作或不运转, 出毛病, 有故障: My car has packedup. 我的汽车坏了. pack (sth) up put (one's possessions) into cases, etc before leaving a place 将（东西）装箱打包离开某地: He packed up his things and left. 他把东西装进箱子里就动身了.



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