If you erased a closing tag, typed a tag name incorrectly, or perhaps overtyped a symbol, such as a less than sign (<), you might run into this problem.
如果您误删了一个结束标记，键入的标记名不正确或者多打了一个小于号 (<)，则有可能遇到这种问题。
If you've ever tried to put some HTML or XML into an XML document, maybe as documentation, you've run into this problem as soon as it comes time to include an example.
如果您曾经尝试过将一些HTML或XML放到一个XML文档(也许作为文档资料)中，那么只要您试图包含一个示例，就会遇到这个问题。
Therefore, it is important and practical to carry on a deep and systematic research into this problem.
因此，对这个问题进行系统化的深入研究具有重要的现实意义。
Maybe not the perfect solution for everyone, but hopefully this helps anyone who runs into this problem in the future.
也许不是每个人的完美解决方案，但希望这有助于任何在未来遇到这个问题的人。
Initially, this paper makes a probe into this problem from the perspective of comparison and arrives at a definite conclusion.
文章先从比较的视角对这一问题进行了探讨，并得出肯定性结论。
Through a deep investigation into this problem and based on the analysis of present algorithms, a better solution is provided.
在总结现有算法的基础上，进行了比较深入的研究，提出了一种较完善的解决方案。
In fact, urban planning, urban geography, urban economics and other related disciplines have put quite some effort into this problem.
实际上，城市规划学、城市地理学、城市经济学以及其它的相关学科已经在这个问题上作了很大的努力。
In fact, urban planning, urban geography, urban economics and other related disciplines have put quite some effort into this problem.
实际上，城市规划学、城市地理学、城市经济学以及其它的相关学科已经在这个问题上作了很大的努力。
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