unproductive是什么意思？

unproductive

英[ˌʌnprəˈdʌktɪv] 美[ˌʌnprəˈdʌktɪv]

• 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；

副词：unproductively;

例句

• 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 ( 如油 )
• 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.
• I've had a very unproductive day. 我这一天什么事都没干成。
• ...increasingly unproductive land. 越来越贫瘠的土地
• 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。

反义词

• adj.
  unproductive的反义词之：无生产的;无收益的
  productive,
• unproductive的反义词之：其他释义
  productive,

柯林斯高阶英汉双解学习词典释义

• ADJ-GRADED
  没有好结果的；徒然的
  Something that is unproductive does not produce any good results.
  例句
  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

英英词典释义

• Adjective
  1. not producing or capable of producing;
  "elimination of high-cost or unproductive industries"
  2. not producing desired results;
  "the talks between labor and management were unproductive"