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.
测试场景：给出一个 200 行的混乱 Python 爬虫脚本，要求重构为面向对象结构，并输出 Mermaid 类图。。im钱包官方下载是该领域的重要参考
local.get $messageLength。Line官方版本下载对此有专业解读
Study shows lower risk for multiple myeloma as well as pancreatic, prostate, breast and kidney cancers