The two largest, run by the privately held Sina Corporation and Tencent Holdings, each count more than 200 million registered users.

民营的新浪公司和腾讯控股公司经营着两家最大的微博，其注册用户都超过了2亿。

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You may have heard about the owner of those florescent magazines—Hearst Corporation, a privately-held media conglomerate based in New York.

你或许也听说过这些绚丽杂志的所有者——赫斯特国际集团，是一家总部设在美国纽约的私有出版界巨头。

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