Not being able to describe precisely what was done will make this task very difficult.
不能确切地描述你做了什么会使这个工作更形困难。
XQuery allows a client to describe precisely the type of XML document that it would like the server to return.
XQuery允许客户端精确描述希望服务器返回的XML文档类型。
Strata control system belongs to grey system because its position, structure and boundary condition are difficult to describe precisely.
岩层控制系统的状态、结构和边界条件难以精确描述,属本征性灰色系统。
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