Because CORBA is language independent, it relies on an interface definition language (IDL) to express how clients will make a request to the service that implements the interface.
因为CORBA与语言无关，所以它依靠一种接口定义语言(IDL)，来表达客户机如何向实现接口的服务发出请求。
Listing 1 shows the simple COM API's Interface Definition Language (IDL) specification.
清单1显示了这个简单的COM API的接口定义语言(IDL)规范。
WSDL is the interface definition language (IDL) of Web services and the contract between the client and the server.
WSDL是Web服务的接口定义语言(IDL)和服务器与客户间的协议。
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