食盐的各种争论存在一个问题，埃德尔曼博士说，就是所有的调查研究其实都是不完善的。
One problem with the salt debates, Dr.Alderman said, is that all the studies are inadequate.
问题根源可能在基金的管理水平与我国证券市场制度的不完善性上。
The reason of the problem could be the faultiness of security market system in China.
由于当时微积分的基础并不完善，引发了许多的问题。
As the basis of Calculus was not perfect, a lot of questions appeared.
由于当时微积分的基础并不完善，引发了许多的问题。
As the basis of Calculus was not perfect, a lot of questions appeared.
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