unproductive什么意思解释?

adj.
不毛的,没有产物的,没有收益的,非生产性的,徒然的,没有效果的

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    I've had a very unproductive day.我这一天什么事都没干成。One quarter of the country is reckoned as unproductive.该国四分之一的土地被认为是不毛之地.To prospect for ( oil, for example ) in an area supposed to be unproductive.盲目开掘在认为资源不足的地区盲目找 ( 如...
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    unproductive的反义词有:productive, productive。adj.unproductive的反义词(无生产的;无收益的):productive。unproductive的反义词(其他释义):productive。...
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    unproductive的音标:unproductive的英式发音音标为:[ˌʌnprə'dʌktɪv]unproductive的美式发音音标为:[ˌʌnprə'dʌktɪv]...
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    I've had a very unproductive day.我这一天什么事都没干成。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One quarter of the co...