| 词汇 | efficiency |
| 词根词缀 | 词源： 1630s, "power to accomplish something," from L. efficientia (see efficient). In mechanics, "ratio of useful work done to energy expended," from 1858. Attested from 1952 as short for efficiency apartment (itself from 1930). 词根记忆： n. 效率;功效Friction lowers the efficiency of a machine.摩擦减低机器的效率. n. 效率(ef出+fic做→做出事情→有效率)[-ency,-iency表名词,ence的变体] 词根词缀： efficiency efficiency n 效率(ef出+fic做…做出事情…有效率) -ency,-iency表名词,ence的变体 deficiency n 缺点(de不+fic做…做得不够…缺陷) solvency n 溶解力,还债能力(solve溶解) latrncy n 潜伏(期) (latent潜伏的) stridency n 尖锐,刺耳(strident刺耳的) complacency n 自满,自得(com前缀,加强语气+plac取悦…被取悦…自满) emergency n 紧急情况(emerge出现…出现的紧急情况) efficiency n 效率(ef出+fic做…做出事情…有效率) persistency n 坚持(persist坚持) |
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