// drop-oldest: Discard old data to make room
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.，这一点在服务器推荐中也有详细论述
"result": {。业内人士推荐旺商聊官方下载作为进阶阅读
ne particle requires you to know that Old English used negative concord