/ɪˈfɪʃnt ||; ɪˈfɪʃənt/adj able to work well without making mistakes or wasting time and energy 有效率的: Our secretary is very efficient. 我们的秘书办事很有效率。You must find a more efficient way of organizing your time. 你得想个办法，更有效率地安排你的时间。 [OPP] inefficient 反义词为 inefficient➔efficiency /ɪˈfɪʃnsi ||; ɪˈfɪʃənsɪ/ noun [U] ➔efficiently adv