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.
2.1 深度思考（Deep Thinking）：复杂逻辑推理
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That has already sparked alarm in the US among Democrats and media advocates, who fear it will lead to more cautious coverage of the Trump administration.
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