efficient
- 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"