The medium language is composed of query link, concept link, query aim link and query condition tree etc.5.
该中间语言由查询成分链表querylink、复合概念等价变换链表conceptlink、实体队列entityqueue、查询目标链表queryaimlink、查询条件树queryconditiontree等构成。
参考来源 - 关于计算机理解自然查询语言的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
要想长得高大，一棵树需要具备三个条件：合适的育苗地点、良好的生长条件和大量低成虫死亡率的时间。
To achieve giant stature, a tree needs three things: the right place to establish its seedling, good growing conditions and lots of time with low adult mortality.
然后，在后面的小节中，将了解如何使用树控件显示和选择元数据条件，从而改进文档搜索的用户界面。
Then in a later section, see how the user interface can be improved for document search by using a tree control for displaying and selecting the metadata conditions.
决策树以图形方式描述导致某项操作的相关条件链。
Decision trees graphically depict chains of dependent conditions leading to an action.
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