However, the anonymity of bidders may be compromised already at a stage preceding the auction, especially in ERAs used as a phase in some procurement methods or framework agreements.
但竞标人的匿名性可能早在拍卖前阶段就已经受到损害，尤其是电子逆向拍卖用作某些采购方法或框架协议的一个阶段。