（三）负责灯塔或者其他助航设备的管理部门，在执行职责时的疏忽，或者其他过错行为。
One clever approach is to place an upper bound on the number of times that a ZK credential can be used. For example, we might wish to ensure that a credential can be “shown” at most N times before it expires. This is analogous to extracting many different single-use credentials, without the hassle of having to make the Issuer and User do quite as much work.
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上述社論指出張又俠和劉振立的「七宗罪」：
‘알바는 퇴직금 없다’는 거짓말… 1년간 주 15시간 근무 땐 보장
Фото: Amr Alfiky / Reuters