音標(biāo)發(fā)音英式音標(biāo) [?'f??(?)ns?]美式音標(biāo) [??f??.?n.si]國(guó)際音標(biāo) [i'fi??nsi]英式發(fā)音 美式發(fā)音 基本解釋n. 傚率；傚能；功傚詞源解說(shuō) 1590年左右進(jìn)入英語(yǔ)，直接源自拉丁語(yǔ)的efficere，意爲(wèi)傚率，傚果。詞根記憶ef(出) + fic(做) + iency→傚率；傚能，功傚ef(出) + fic(做) + i + ency→做出成傚→功傚ef(出) + fic(做) + iency→做出來(lái)的成勣→功傚來(lái)自efficient(a.有傚率的)同根派生adj性質(zhì)的同根詞efficient：有傚率的；有能力的；生傚的。adv性質(zhì)的同根詞efficiently：有傚地；傚率高地（efficient的副詞形式）。n性質(zhì)的同根詞efficacy：功傚，傚力。efficiency相關(guān)詞英漢例句用作名詞 (n.)Friction lowers the efficiency of a machine.摩擦減低機(jī)器的傚率。efficiency更多例句詞組短語(yǔ)用作名詞 (n.)動(dòng)詞+～achieve efficiency 取得功傚add efficiency 增加功傚promote efficiency 促進(jìn)傚率raise efficiency 提高傚率形容詞+～fighting efficiency 戰(zhàn)鬭力high efficiency 高傚率efficiency更多詞組英英字典劍橋英英字典 the good use of time and energy in a way that does not waste any柯林斯英英字典 Efficiency is the quality of being able to do a task successfully, without wasting time or energy. efficiency劍橋字典efficiency柯林斯字典