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引荐——通过点击其他域名（不包括社交媒体站点、基于网络的电子邮件客户端、搜索引擎）的超链接向站点投放的流量。Subject matter towards the conditions and terms of this License, Each individual Contributor hereby grants to you a perpetual, worldwide, royalty-free of charge, non-unique, irrevocable (a