这听起来好像有违直觉，但仅在刚开始的时候：然后，你就发现原来理论中的混乱逻辑。

This may sound counterintuitive, but only at first: then you glimpse its awesome logic.

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如果每个程序不得不定义自己的身份验证逻辑，就会很混乱。

If every program had to define its own authentication logic, it would be a mess.

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HTML V4的出现就是为了结束这种混乱，它将表示逻辑推给了CSS，为高级的内容定位引入了层(DIV)。

HTML V4 was designed to end this chaos, as it externalized presentation logic to CSS and introduced layers (DIVs) for advanced positioning of content.

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