单词 | pack up |
释义 | Word Frequency pack upverb (adverb) 1. to put (things) away in a proper or suitable place 2. informal to give up (an attempt) or stop doing (something) if you don't do your work better, you might as well pack up 3. (intransitive) (of an engine, machine, etc) to fail to operate; break down 4. engineering to use packing to adjust the height of a component or machine before it is secured in its correct position or alignment |
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