（四）私自会见当事人、代理人，或者接受当事人、代理人的请客送礼。
To “show” the credential to some Resource, the user simply needs to hand over the pair (SN, signature). Assuming the Resource knows the public key (PK) of the issuer, it can simply verify that (1) the signature is valid on SN, and (2) nobody has every used that value SN in some previous credential “show”.，更多细节参见体育直播
Watch Gorton and Denton by-election debate in full。im钱包官方下载对此有专业解读
小鹏公布了第二代 VLA 的推送与落地计划：，这一点在体育直播中也有详细论述