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我在这个 Quora 线程上读到，单个 Facebook 应用程序 ID 可以跨多个域名工作，但这是您必须向 Facebook 开发团队提出的要求。有人可以验证吗？我不确定在哪里提出请求。
http://www.quora.com/Facebook-Connect/Why-doesnt-Facebook-accept-an-IP-address-as-a-valid-base-domain-for-Facebook-Connect