| 词组 | efficiency |
| 释义 | 1． 是不可数名词，在下面句子中，effi- ciency 前没有冠词: to increase agricultural efficiency in the poorer regions of the world aiming at improving efficiency and customer service 2． 特指“效率”时，efficiency 前可加定冠词: the efficiency of the Germans measuring the efficiency of his newspapers |
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英语用法大全包含3679条英语用法指南，基本涵盖了全部常用英文词汇及语法点的翻译及用法，是英语学习的有利工具。