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在早期，互联网主要被科学家用来与其他科学家交流。
In the early days, the Internet was used mainly by scientists to communicate with other scientists.
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上网主要限于主要城镇和城市。
Access is largely limited to the main towns and cities.
这张照片取自竞赛官网主页。
This photo shows the contest's homepage.
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