An creates a completely separate browsing context with its own window object, its own document, and most importantly;its own prototype chain. A function hooked on HTMLMediaElement.prototype in the parent window is not the same object as HTMLMediaElement.prototype in the iframe’s window. They’re entirely separate objects. If fermaw’s audio element lived inside an iframe, my prototype hook in the parent window would never fire.
（四）非法拦截或者强登、扒乘机动车、船舶、航空器以及其他交通工具，影响交通工具正常行驶的；。关于这个话题，Line官方版本下载提供了深入分析
Border Points: Each cluster has a limited number of defined "border points" – these are the gateways in and out of the cluster.。关于这个话题，爱思助手下载最新版本提供了深入分析
对于 Protobuf 的介绍和原理，可以参考前文 juejin.cn/post/757536…，详情可参考51吃瓜