One could save that data dynamically on each page and pass it all as form data, but that poses problems when users backtrack or go to other sites then come back again.

我们可以在将它们全部作为表单数据传送的每个页面上动态保存数据，但当用户顺原路退回或到其它的站点后又回来时会引发问题。

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Go back to the main page, and try visiting the users area.

返回主页，并尝试访问用户区。

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And because users can click Close and go back to normal browsing, it provides a way of getting more detail without losing a user's place on the page.

因为用户可以单击Close返回正常的浏览页面，因此这种技术可以为用户显示很多详细内容而又不必离开当前页面。

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It now has a uniform menu tray that pops out from the left side that looks the same across all screen sizes, which allows users to navigate to any part of Facebook without needing to go back to the home page -- meaning it's easier than ever to get sucked down a rabbit hole of baby pictures, witty comments, likes and pokes.

ENGADGET: Facebook freshens up News Feed, brings bigger images, feed filtering and a uniform cross-platform UX