美国域名，是United States的缩写。分为顶级域名、二级域名，三级域名等级别。
如果某些国家域名庞大，如英国和美国，馆长们不要指望把什么都保存下来。
In countries with larger domains, such as Britain and America, curators cannot hope to save everything.
巅峰媒体发现的唯一一个细微的差别就是搜索结果中来自英国的域名比来自美国的域名增加了，但变化不大。
One slight difference that the Summit Media study noticed was that slightly more co.uk domain names now appear in searches that originate from the US. The difference there, though, was only minor.
百度昨日发表声明，指出黑客并未直接入侵百度服务器，而是攻击了美国的域名注册商。
In a statement yesterday, Baidu noted that attackers did not try to break into the servers of Baidu but attacked the domain name registrar used by Baidu, which is based in the us.
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