knuckle up

动词 v.

英文释义

动词 v.
  1. To clench one's fist(s) as though in preparation for a fight. informal
    — With a resolve to get his son away from these monsters, Isaac knuckled up and mean-mugged his opponent.
  2. To approach a problem aggressively. broadly,informal
  3. To strike or fight. slang

词形变化

knuckles up present,singular,third-person knuckling up participle,present knuckled up participle,past knuckled up past
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