这虽然不大会增加文件大小但对于用户代理来说它需要更少的内存来把图片解压为像素地图。

This doesn't affect the file size as much but requires less memory for the user agent to decompress the image into a pixel map.

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类似地，无线数码相机会用同一代理主机作为定位打印机和打印图片的方法。

Likewise, a digital wireless camera could use the same surrogate host as a means of locating the printer and printing out a picture.

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像信息代理人一样的Firefox3；图片由Mozilla提供。

Firefox 3 as Information Broker; diagram by mozilla.

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