(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 fluorescent lamps are efficient at converting electricity into light. 荧光灯可以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 an efficient administrator. 一位有能力的管理者。 ■[in combination]preventing the wasteful use of a particular resource 节约的 an energy-efficient heating system. 一种节能的供暖系统。
派生 efficiently adverb 语源
late Middle English (in the sense 'making, causing', usually in efficient cause): from Latin efficient- 'accomplishing', from the verb efficere (see effect). The current sense dates from the late 18th cent