Until recently, PC I/O couldn't outperform the general-purposeinterface bus (GPIB) we've been using for decades.
直到最近，PC的输入输出设备做得最好的还是通用接口总线（GPIB），而它已经用了几十年了。
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The well-defined, decoupled interfaces introduced by explicit interface enabled the creation of generalpurpose interfaces for management and testing, which services were able to support as required.
Web Services provide a way of describing and publishing a generalpurpose and agreed interface for accessing data and applications, through the WSDL (Web Services Description Language) notation.