名詞 knock off:

1. an unauthorized copy or imitation
   同義詞：knockoff, clone

動詞 knock off:

1. get rid of (someone who may be a threat) by killing
   同義詞：neutralize, neutralise, liquidate, waste, do in
2. cut the price of
   同義詞：shave
3. take by theft
   同義詞：hook, snitch, thieve, cop, glom
4. write quickly
   同義詞：dash off, scratch off, toss off, fling off
5. stop pursuing or acting
   同義詞：drop

1. It's after five; let's knock off.
   已經(jīng)五點多了; 下班吧
2. We knock off at 12:30 for lunch.
   我們十二點半時停下工作去吃飯。