knuckle down

动词 v.
中文释义

英文释义

动词 v.
  1. To get to work; to focus on a task. idiomatic,intransitive
    — You should knuckle down and do your homework!
  2. To submit; knuckle under.

词形变化

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

词源

1864 in American English, from the game of marbles.
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