unproductive

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

1. 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。
2. We have reduced the unproductive spending.
   我们已削减了非生产性开支。
3. I've had a very unproductive day.
   我这一天什么事都没干成。
4. It is unproductive self-punishment.
   自我惩罚是徒劳的。

unproductive
Directly Unproductive, Profit-Seeking (DUP) Activities
Entrepreneurship: Creative, Unproductive and Destructive
On the Relative Importance of Competition in Unproductive Environments
Are Oxazolidinones Really Unproductive, Parasitic ...
The Role of Government Policy on Entrepreneurial Activity: Productive, Unproductive, or Destructive?
Different Carbon Support for Respiration and Secondary Production in Unproductive Lakes
Marcel Faber Roundtable: is our antibiotic pipeline unproductive because of starvation, constipation or lack of inspiration?
Baltz, R. H. Marcel Faber Roundtable: is our antibiotic pipeline unproductive because of starvation, constipation or lack of inspira...
Entrepreneurship: Productive, unproductive, and destructive (Reprinted from Journal of Political Economy, vol 98, pg 893-921, 1990)