efficient
a. 有效率的, 能干的
发音
词形变化
教材释义与例句
有效率的；有能力的；生效的
释义与例句
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1.
A cause; something that causes an effect.
废旧
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1.
Making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy.
高效率
An efficient process would automate all the routine work.
Our cleaners are almost too efficient: they throw away anything left out on a desk.
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2.
Expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input.
The motor is only 20% efficient at that temperature.
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3.
Causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression efficient cause = causative factor or agent).
Ownership, maintenance, or use of the automobile need not be the direct and efficient cause of the injury sustained
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4.
effective, efficacious
词汇关系
相关短语
词源
1398, “making,” from Old French, from Latin efficientem, nominative efficiēns, participle of efficere (“work out, accomplish”) (see effect). Meaning “productive, skilled” is from 1787. Efficiency apartment is first recorded 1930, American English.
来源：wiktionary