inefficient /ˌɪnəˈfɪʃənt/ adjective Learner's definition of INEFFICIENT
[more inefficient; most inefficient]
: not capable of producing desired results without wasting materials, time, or energy : not efficient效率低的;能力差的 -
an inefficient worker效率低的工人
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The delivery system was very inefficient.这一传送系统十分低效。
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an inefficient use of fuel燃料的低效使用