But, as a self-descriptive markup language, XML has solved the problem to a great extent.
而XML作为一种自描述性的标记语言在很大程度上解决了这个问题。
2
The first six types are largely self-descriptive (see the Lua novelties section above for the exceptions); the last two need some explanation.
前 6 种类型基本上是自描述的（例外情况请参见上面的 Lua 特性 一节）；最后两个需要一点解释。
3
On the other hand, decomposition of XML data into relational columns is a complex and costly process, and it removes the self-descriptive semantic information within the XML.