on
英 [ɒn]
美[ɑn]
	    - adv. 向前地;作用中,行动中;继续着
 - prep. 向,朝……;关于;在……之上;在……时候
 - adj. 开着的;发生着的,正在进行中
 - n. (On)人名;(日)温(姓、名);(缅、柬、印)翁
 
英英释意
- 1. in operation or operational;
 - "left the oven on"
 - "the switch is in the on position"
 
- 2. (of events) planned or scheduled;
 - "the picnic is on, rain or shine"
 - "we have nothing on for Friday night"
 
- 3. performing or scheduled for duties;
 - "I'm on from five to midnight"
 - "Naval personnel on duty in Alaska"
 - "her on-duty hours were 11p.m. to 7 a.m."