The second rule is up to you: you need to make sure that you provide a language-agnostic way to perform all public and protected operations.
第二个规则取决于你：你需要保证能提供一个语言无关的方法来执行所有的公共和保护操作。
Web service is a technology that allows applications to communicate with each other in a platform - and programming language-agnostic manner.
Web服务是一种技术，允许应用程序以平台和编程语言无关的方式互相通信。
Protocol buffers is a language-agnostic data-serialization format developed by Google, designed to be faster than XML for sending data over a network.
Protocol buffers 是一个由 Google 开发的与语言无关的数据串行化格式，旨在比 XML 更快地通过网络传送数据。
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