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YouTube is a place to discover, watch, upload and share videos.

Patent directory service

同程网开放平台是一个由同程网推出的旅游产品在线预订服务的分享平台，提供了丰富的优质旅游资源，以及多种合作方式，方便灵活，旨在帮助合作伙伴搭建属于他们自己的旅游产品预订频道。

A community helping each other discover Korean ancestors...

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

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Browse topics in the O'Reilly Media store - Tech books, DRM-free ebooks and videos from O'Reilly Media, Microsoft Press, Wrox, No Starch Press, Pragmatic Bookshelf, and many more publishers. Topics include programming, apple &am...