That is, each type that exists in the WSDL or XSD file will have a special serializer or deserializer created for it that knows how to handle those types.
也就是说，WSDL或XSD文件中所存在的每种类型都将具有为其创建的特定序列化器或反序列化器，这些序列化器或反序列化器知道该如何处理这些类型。
If you serve an XHTML document with a MIME type of application/xhtml+xml, Internet Explorer will prompt you to download the file, because it doesn't know how to handle the file.
如果你使用application/xhtml+xml作为MIME类型来定义一个XHTML文档，Internet Explorer将提醒你下载这个文件，因为它不知道怎样处理这一类型的文件。
The most common type of unmanaged resource is an object that wraps an operating system resource, such as a file handle, window handle, or network connection.
最常用的非托管资源类型是包装操作系统资源的对象，例如，文件句柄、窗口句柄或网络连接。
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