inexactness

例句：

1. 1.The math problem was so difficult that it required a lot of inexactness to solve it.
   那个数学问题太难了，需要大量的不精确性才能解决。
2. 2.The scientist's measurements were inexactness due to the instrument's malfunction.
   科学家的测量由于仪器故障而不够精确。
3. 3. The report on the new product lacked inexactness and was not very informative.
   关于新产品的报告缺乏准确性，信息量不大。