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| 单词 | efficiency |
| 释义 |
efficiency [ɪ'fɪʃ.ənt.si] noun uncountable ADVANCED ■when someone or something uses time and energy well, without wasting any 效率；效能 •What is so impressive about their society is the efficiency of the public services.他们的社会给人留下最深刻印象的是其高效率的公共服务。 •energy efficiency能源使用效率 specialized ■the difference between the amount of energy that is put into a machine in the form of fuel, effort, etc. and the amount that comes out of it in the form of movement 效率；功率 |
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