任何已注册(经过认证)的用户都可以创建一个拍卖，但只有创建拍卖的用户才可以修改这个拍卖。
Any registered (authenticated) user can create an auction but only the user who created the auction may modify it.
根据Compete, 2009年1月在ebay上参与拍卖的用户数字比1年减少了150万。
According to Compete, 1.5 million fewer users actually placed bids on eBay in February 2009 than a year ago.
实时的动态数据比如新闻标题、证券报价和拍卖行情都需要尽快地发送给用户。
Real-time dynamic web data such as news headlines, stock tickers, and auction updates need to be propagated to the users as soon as possible.
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