efficiency
用法要点
句型搭配
efficiency 常与动词 improve、increase、enhance 等搭配,表示提高效率;也可与形容词 high、low、maximum 等连用,描述效率水平。
介词用法
efficiency 后常接介词 in 表示在某个方面的效率,如 efficiency in production;也可用 of 表示所属关系,如 efficiency of the system。
语域说明
efficiency 在正式语体(如学术、商务)中常见,用于描述系统、流程或资源的优化程度;在日常对话中多指工作或学习效率。
基础例句
We need to improve our work efficiency to finish the project on time.
我们需要提高工作效率,以便按时完成项目。
Her new method has greatly increased the efficiency of our daily tasks.
她的新方法大大提高了我们日常工作的效率。
The company is focusing on energy efficiency to reduce costs.
公司正专注于能源效率以降低成本。
I admire his efficiency in handling multiple tasks at once.
我钦佩他同时处理多项任务的高效。
高级例句
The study evaluates the efficiency of renewable energy systems in urban environments.
这项研究评估了城市环境中可再生能源系统的效率。
Implementing lean manufacturing principles can significantly enhance operational efficiency.
实施精益制造原则可以显著提高运营效率。
The report highlights efficiency gains achieved through digital transformation initiatives.
报告强调了通过数字化转型举措实现的效率提升。
Economic models often assume perfect efficiency in market transactions.
经济模型通常假设市场交易具有完全效率。
高频搭配
verb
adjective
noun
adverb
preposition
phrase
常见错误
错误:efficiency 是名词,不能直接修饰动词;应用形容词 efficient 或改用介词短语。正确:使用形容词 efficient 描述人的能力,或说 'He shows high efficiency in solving problems.'
错误:中文习惯说'效率大',但英文中 efficiency 用 high 或 low 描述水平,不用 big 或 small。正确:使用 high 来表示效率高。
近义词辨析
effectiveness
effectiveness 强调达成预期目标或产生效果的能力,侧重于结果;efficiency 更注重以最少资源达成目标,侧重于过程优化。
The campaign was effective in raising awareness, but its efficiency in cost management was low.
productivity
productivity 指单位时间内产出的数量或价值,通常与产量相关;efficiency 指投入与产出的比率,强调资源利用的最优化。
Increased productivity led to more output, but improving efficiency reduced waste and costs.