互联网可能是我这一生中见到的最伟大的发明，也是垃圾供应源（如同其他伟大发明一样，比如之前的出版社、无线电和电视）。
The internet, while being possibly the greatest invention of my lifetime, is also (like the great inventions of the printing press, wireless and television before it) a means of purveying rubbish.
当互联网巨头推出这一服务后，程序员很快便想出该如何将地图和其他信息源合成在一起。
When the online giant launched the service, programmers quickly figured out how to mix the maps with other sources of information.
外部数据源包括平面文件、其他数据库、互联网提要和其他来源。
External data sources include flat files, other databases, Internet feeds, and other sources.
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