水资源费征收制度的若干重大基础理论问题尚未得到圆满的解决，有的具体制度在我国尚付阙如。
Several great basic theoretical questions of charging system of water resource fee haven't get satisfactory settlement yet, some concrete systems are still a blank in our country.
直到目前为止，对绘画期刊深入而系统的研究成果尚付阙如。
Untill now, there has been few results in further and systematic researches on painting periodicals.
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