我家预订的餐馆很抢手，年夜饭用餐时间分为两场：第一场是下午四点半到七点，第二场是晚上七点半到十点。我们选择了第一场。
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.，更多细节参见WPS下载最新地址
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This is the key insight: the build language is not baked into BuildKit. It’s a pluggable layer. You can write a frontend that reads a YAML spec, a TOML config, or a custom DSL, and BuildKit will execute it the same way it executes Dockerfiles.