英语词汇efficiency怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	efficiency
释义	efficiency/iˈfiʃ(ə)nsi/n. (pl. -ies) 1 the state or quality of being efficient 有效，效率，功效 2 Mech. & Physics the ratio of useful work performed to the total energy expended or heat taken in 【机】【物理学】效率 [Latin efficientia (as EFFICIENT)]
随便看	keep one's countenance keep one's distance keep one's end up keep one's eyes open (or peeled or Brit. [英] skinned) keep one's feet keep one's hair on keep one's hair on keep one's hand in keep one's head keep one's head above water keep one's head down keep one's legs keep one's mouth shut keep one's nose clean keep one's nose to the grindstone keep one's nose to the grindstone keep one's own counsel keep one's powder dry keep one's shirt on keep one's word keep open house keep (or archaic [古义] bear) a person company keep order keep (or leave) one's options open keep (or lose) track of

英汉双解词典包含94788条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。