off
英 [ɒf]
美[ɔf]
	    - prep. 离开;脱落
 - adv. 切断;走开
 - adj. 远离的;空闲的
 
英英释意
- 1. not in operation or operational;
 - "the oven is off"
 - "the lights are off"
 
- 2. below a satisfactory level;
 - "an off year for tennis"
 - "his performance was off"
 
- 3. (of events) no longer planned or scheduled;
 - "the wedding is definitely off"
 
- 4. in an unpalatable state;
 - "sour milk"
 
- 5. not performing or scheduled for duties;
 - "He's off every Tuesday"
 - "he was off duty when it happened"
 - "an off-duty policeman"