efficiency
/ɪˈfɪʃnsi/
n.
标准词条
CET-4
一句话记住
效率;功效;高效
释义与例句
n.
效率;功效;高效
the quality of doing something well and without wasting time, money or energy
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The new system has greatly improved the efficiency of the booking process.
新系统大大提高了订票流程的效率。
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Farmers are looking for ways to increase water efficiency in dry regions.
农民正在寻找提高干旱地区用水效率的办法。
展开其余 1 条例句
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She admires the efficiency with which the team handles complaints.
她很欣赏这个团队处理投诉时的高效率。
词源与构词
记忆钩子
efficiency 多为不可数名词,常说 improve/increase efficiency;形容词是 efficient(高效的),不要与 effective(有效的)混用。
词族与关联词
词族(同一词根派生出的不同词性或形式)
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efficient 效率高的;有能力的efficient 是形容词,指以较少时间或资源完成工作,如 an efficient assistant。
同义词
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productivity 生产率;生产效率efficiency 强调少浪费、以最小代价完成任务;productivity 强调单位时间内产出的数量,常与 increase、measure 搭配。Productivity in the factory rose after the old machines were replaced. 旧机器更换后,工厂的生产率提高了。
易混词(形近或义近,注意区别)
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effective 有效的;起作用的efficiency 是名词“效率”,efficient 是形容词“高效的”;effective 是形容词“有效的”,其名词 effectiveness 指有效性,并不表示投入产出的效率,不要写成 efficiency of the medicine 来表达“药效”。The new medicine is effective against the virus. 这种新药对病毒有效。
常见搭配
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improve efficiency 提高效率Sharing files online can improve efficiency and reduce paperwork. 在线共享文件可以提高效率、减少纸质工作。
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energy efficiency 能效;能源效率New building rules set higher standards for energy efficiency. 新的建筑规范对能效提出了更高标准。
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with great efficiency 非常高效地The rescue team worked with great efficiency to clear the road. 救援队非常高效地清理了道路。