| 单词 | beef up | 
| 释义 | beef upphrasal verbSee full dictionary entry for  beef If you beef up something, you increase, strengthen, or improve it.  ...a campaign to beef up security. [VERB PARTICLE noun (not pronoun)]  Both sides are still beefing up their military strength. [VERB PARTICLE noun]  ...a beefed up police presence. [VERB-ed PARTICLE][Also VERB noun PARTICLE] beef up in American English Informal   to strengthen by addition, reinforcement, etc. Examples of 'beef up' in a sentence | 
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