(especially of a system or machine)achieving maximum productivity with minimum wasted effort or expense
(尤指系统或机器)效率高的
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fluorescent lamps are efficient at converting electricity into light .荧光灯能将电能高效地转换成光能。
(of a person)working in a well-organized and competent way
(人)有能力的,能胜任的
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an efficient administrator .一位有能力的管理者。
[in combination]preventing the wasteful use of a particular resource
防止造成…的浪费的
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an energy-efficient heating system .一种节能的供暖系统。
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efficientadj.效率高的;有能力的;能胜任的;防止造成…的浪费的
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coefficientn.系数;率
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sufficientadj. & det.足够的;充足的
"late Middle English (in the sense ‘making, causing', usually in