| 正面 | 3067.efficiency 英 [ɪ'fɪʃ(ə)nsɪ]美 [ɪ'fɪʃənsi]     |
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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。5. efficient => efficiency (efficient + -cy).n. 效率；效能；功效 例句： 1. The spa is the last word in luxury and efficiency.这家矿泉疗养浴场极尽奢华，功效极高。 efficiency 效率ef-, 向外。-fic, 做，词源同fact, effect. efficiency (n.)1590s, "power to accomplish something," from Latin efficientia "efficient power; efficiency; influence" (from efficientem; see efficient) + -cy. In mechanics, "ratio of useful work done to energy expended," from 1858. Attested from 1952 as short for efficiency apartment (itself from 1920)." |