| 单词 | jam-up |
| 释义 | jam-up /jam"up'/, n. a stoppage or slowing of motion, work, or the like, due to obstruction, overloading, malfunction, or inefficiency; jam: Your letters didn't go out yesterday because there was a jam-up in the mail room. [1940-45; n. use of v. phrase jam up] |
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