英语词源
- unproductive (adj.)
- 1756, from un- (1) "not" + productive (adj.). Related: Unproductively; unproductiveness.
权威例句
- 1. I've had a very unproductive day.
- 我这一天什么事都没干成。
- 2. 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。
- 3. One man's mystical haven for wealth is another's unproductive barbarous relic.
- 一个人的神秘的财富庇护所则是另一个人的不毛的荒凉废墟.
- 4. One - quarter of the country is reckoned as unproductive.
- 这个国家有四分之一被认为是不毛之地.
- 5. The letter was not unproductive.
- 信没有白写.