弘扬国学 · 传承文化

efficiency

英 [ɪ'fɪʃ(ə)nsɪ] 美 [ɪ'fɪʃənsi]

CET4TEM4考研TOEFLCET6

解释

n. 效率；效能；功效

※ 提供单词"efficiency"的中文意思、发音示范及音标对照，中英文词源、例句和用法等。

中文词源

efficiency 效率

ef-, 向外。-fic, 做，词源同fact, effect.

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).

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例句和用法

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。

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。

3. It was achieved with minimum fuss and maximum efficiency.: 事情事半功倍地完成了。

4. It doesn't take much to improve the energy efficiency of your home.: 改善家庭能耗并非难事。

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。