Threshold group signature is an important kind of signatures, but all of the existing threshold group schemes have weaknesses.
门限群签名是一类重要的数字签名，但现有的门限群签名方案几乎都有缺点。
Yet it is not too late, in the eyes of many congressmen at least, to introduce elaborate new schemes to avert calamity. A bipartisan group of senators unveiled one shortly before the president spoke.
但至少在多数国会议员看来，通过引入新策略避免危机倒也不算太晚，一位两党派在不少国会议参议员在稍后中透露道。
We've seen increased use of sophisticated forms and letterhead to send what appears to be legitimate World Bank Group correspondence, as well as several schemes that reference the Bank.
据我们了解，诈骗者目前越来越多地使用设计精美的表格和信笺来发送看上去合法的世行集团正式函件，一些诈骗者使用了世行名义。
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