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BNC: 14719 COCA: 17328
unproductive
ʌnprədʌktɪv ˌʌnprəˈdʌktɪv
ADJ-GRADED 没有好结果的;徒然的 Something that is unproductive does not produce any good results. 没有好结果的;徒然的
  • Research workers are well aware that much of their time and effort is unproductive.

    研究人员很清楚,他们的很多时间和精力全都是白费。

  • ...increasingly unproductive land.

    越来越贫瘠的土地

Trends of unproductive
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BNC: 14719 COCA: 17328
BNC: 14719 COCA: 17328
unproductive adj.
ineffective
BNC: 14719 COCA: 17328
unproductive
Unsuccessful: failed, abortive, fruitless...
Crop farming: arable, broadacre, cash crop...
Soil fertility and fertilization: compost, compost, desertification...

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