The realization of methods can be looked up in the sourcetexts.
实现的方法可以在源文本中找到。
2
Wikisource is a repository of sourcetexts, including annotations, translations, and supporting materials.
Wikisource是一个源文本资源库，包括注释、翻译和辅助材料。
3
The re module is fairly widely used in Txt2Html to identify various textual patterns in the sourcetexts. A moderately complex example is worth looking at