这是不是一个双重否定的否认？
尽管欧盟委员会开出的这剂良药到底有多大约束力尚待观察，不过不可否认其将扮演协调者和监管者的双重角色。
The commission will play the role of co-ordinator and monitor, though it remains to be seen how binding its prescriptions will be.
您对网上银行保安服务的双重验证是否认识？
Do know what is the two-factor authentication in the Internet banking service?
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