efficiency

efficiency

英 [ɪ'fɪʃ(ə)nsɪ]
　　美 [ɪ'fɪʃənsi]

n. 效率；效能；功效

中文詞源：

efficiency 效率

ef-, 向外。-fic, 做，詞源同fact, effect.

例句：

1. The spa is the last word in luxury and efficiency.
這傢礦泉療養浴場極盡奢華，功效極高。

2. Revenues from "green taxes" could then be channelled back into energy efficiency.
從“綠色稅收”得來的收入便可回過頭來用於提高能效。

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

4. It doesn't take much to improve the energy efficiency of your home.
改善傢庭能耗並非難事。

5. Defrost the fridge regularly so that it works at maximum efficiency.
定期給冰箱除霜，以便它能發揮其最高效率。