| 正面 | 3018.efficient 英 [ɪ'fɪʃ(ə)nt]美 [ɪ'fɪʃnt]     |
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| 背面 |      释义： 1. ef- "out" + fic- => fici- => effici-. 在这里取 out 的引申义：完成、结束(finish, end)之意。2. meaning: 事情做完了，事情做结束了. => work out, accomplish.3. => 引申为：事情做完、做结束后的效果。4. effici- + -ent. => 有效的，有效果的，生效的。=> 高效的，效率高的，有本事的。adj. 有效率的；有能力的；生效的 例句： 1. The pill is the most efficient method of birth control.服用避孕药是最有效的避孕方法。 efficientefficient: see effectefficient (adj.)late 14c., "making, producing immediate effect, active, effective," from Old French efficient and directly from Latin efficientem (nominative efficiens) "effective, efficient, producing, active," present participle of efficere "work out, accomplish" (see effect). Meaning "productive, skilled" is from 1787. Related: Efficiently." |