efficiency
英 [ɪ'fɪʃ(ə)nsɪ]
美 [ɪ'fɪʃənsi]
efficiency 助记提示
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).
efficiency 中文词源
efficiency 效率ef-, 向外。-fic, 做，词源同fact, effect.
efficiency 英文词源
- 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).
efficiency 双语例句
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。 来自柯林斯例句
- 2. Revenues from "green taxes" could then be channelled back into energy efficiency.
- 从“绿色税收”得来的收入便可回过头来用于提高能效。
来自柯林斯例句
- 3. It was achieved with minimum fuss and maximum efficiency.
- 事情事半功倍地完成了。
来自柯林斯例句
- 4. It doesn't take much to improve the energy efficiency of your home.
- 改善家庭能耗并非难事。
来自柯林斯例句
- 5. Defrost the fridge regularly so that it works at maximum efficiency.
- 定期给冰箱除霜，以便它能发挥其最高效率。
来自柯林斯例句