efficiency 是英语常用名词，核心含义为“以最小资源达成目标的能力”，广泛应用于生产、能源、管理等领域。其英式与美式音标统一为 [ɪˈfɪʃnsi]，复数形式为 efficiencies [3][4]。柯林斯词典将其定义为“不浪费时间和能源而成功完成任务的质量”，韦氏词典补充了“效率公寓”这一特殊含义，同时涵盖物理学能量转换率与管理学成本效益等专业解释 [3]。

短语搭配

efficiency 常与描述程度、领域的词汇搭配，形成固定表达：

程度类：high efficiency（高效率）、maximum efficiency（最大效率）、ruthless efficiency（极高效率）[7]

领域类：energy efficiency（能源效率）、production efficiency（生产效率）、administrative efficiency（行政效率）[5][7]

动词搭配：improve efficiency（提高效率）、achieve efficiency（达到效率）、boost efficiency（增强效率）

例句

你的工作效率很高，我们极为钦佩。
We were most impressed with your efficiency.

这两家公司已合并以提高效率。
The two companies consolidated for greater efficiency.

定期给冰箱除霜能使其达到最大效率。
Defrost the fridge regularly so that it works at maximum efficiency.

她以特有高效率安排好了一切。
She arranged everything with her customary efficiency.

必须尽快提高我们的工作效率。
We must improve our efficiency as soon as possible.

互联网有望为供应链带来更高效率。
The Internet's promise to bring more efficiency to the distribution chain is still materializing.

新程序已作为提高效率举措的一部分引入。
New procedures had been introduced as part of an efficiency drive.

生病降低了他的工作效率。
His illness has impaired his efficiency.

以提高功效为依据可以证明采取这种措施是正确的。
Such action can be justified on the grounds of greater efficiency.

员工的工作效率大大提高了。
There is a big boost in employees' work efficiency.

从工厂生产到日常管理，efficiency 始终是衡量系统优化程度的核心指标。你认为在数字化时代，人类对“效率”的追求是否正在改变工作与生活的本质？