The cache Settings section controls whether or not background images are cached, and if so, the directory in which cached images are stored.

缓存设置允许你选择是否使用背景图像缓存，以及选择背景图像缓存目录。

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Combining inline images into your (cached) stylesheets is a way to reduce HTTP requests and avoid increasing the size of your pages.

内联图像组合到你(缓存)的样式表是一个方法减少HTTP请求和避免增加您的页面的大小。

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However, the images on that page are cached.

不过会缓存该页面上的图像。

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This is a particularly tough concept for young people to grasp, as they cannot conceive of entering a highly competitive job market where the boss has as much access to Facebook and cached images as anyone else.

FORBES: Newsflash: Posting Naked Pics On Facebook Could Get You In Trouble!