Discovering the entire inheritance tree structure from an existing system is particularly useful, because it helps you uncover what the top-level class is and what subclasses are in the tree.
从一个已存在系统中发现整个的继承树结构是相当有用的，因为它能向您揭露在树中什么是顶级类以及什么是子类。
The current crisis fully exposed the deficiencies in the existing international financial system and its governance structure.
这场危机充分暴露了现有国际金融体系和治理结构的缺陷。
The exact naming system you use is application-specific, but you can usually use a similar structure of your existing application, which will probably be based on some kind of unique identifier.
使用的何种具体的命名系统特定于应用程序，但通常可以使用一种与现有应用程序类似的结构，并且这种结构很可能基于某种惟一识别符。
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