Even if you do it on a limited basis, it's important to figure out which site elements work best.

即使你做的测试相当有限，但是找出你网站哪个元素最有效还是很重要的。

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On top of that is the shell SWF, which contains all of the constant site elements, such as navigation, footers, etc.

核心层之上是shell SWF，这里包含了所有通用的网站元素，诸如导航栏、脚注等等。

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They also provide valuable advice for page layout, navigation menus, site elements, image selection, and advertising.

它们还提供了页面布局，导航菜单，网站内容，图像选择的宝贵意见，和广告。

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The site combines elements of Pinterest and Quora, where users can share pictures of projects they have completed or are working on and can ask questions and get answers about these projects.

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By focusing on critical elements like site speed Facebook was able to succeed.

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The World Trade Center site's design includes elements that should help protect against flooding, but the Port Authority is re-evaluating that design because of Sandy, Mr. Plate said through a spokesman.

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