From the browser's perspective, the information appears to come from the same domain, but in reality, the content request is made by the proxy on behalf of the client.
从浏览器的角度来看，信息像是来自同一个域，但实际上，内容请求是由代理代表客户机发出的。
From an inquiry perspective, the service control header information (DWLControl) can be used to indicate what languages product content are to be returned in for inquiry services.
从查询角度来看，服务控件标题信息(DWLControl)可用于表示将为查询服务返回哪种语言的产品内容。
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