| 单词 | tighten up | 
| 释义 | tighten up 1. phrasal verb  If a group, team, or organization  tightens up, they make an effort to control what they are doing more closely, in order to become more efficient and successful.   I want us to be a bit more sensible this time and tighten up. [VERB PARTICLE]    2.   See also  tighten [sense 4],  tighten [sense 6]   See full dictionary entry for  tighten  | 
	
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