efficient
英 [ɪ'fɪʃ(ə)nt]
美[ɪ'fɪʃnt]
	    - adj. 有效率的;有能力的;生效的
 
英英释意
- 1. being effective without wasting time or effort or expense;
 - "an efficient production manager"
 - "efficient engines save gas"
 
- 2. able to accomplish a purpose; functioning effectively;
 - "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw
 - "effective personnel"
 - "an efficient secretary"
 - "the efficient cause of the revolution"