PAC versions should be maintained by the certificate-issuing authority; the version should change when the user's group membership information changes.

PAC 版本应该由颁发证书的权威机构进行维护；当用户组的成员关系发生变化时，版本也应该变化。

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The high scorer from each group was awarded a $15 gift certificate for use in the online store.

每组中最高分奖励 15 美元的在线商店购物卷。

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Motivation might have been an issue, as the experiment did not count for class credit, though the highest scorer in each group earned a $15 iTunes gift certificate.

动机水平可能是一个导致差异的原因，研究者们并没有考虑学生们的银行信用状况这个因素，虽然每个小组获的最高分的人都可以得到15美元的itunes礼卷。

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The Llanelli Disabled Access Group has praised Carmarthenshire County Council and presented them with a certificate for their work in the town.

BBC: Disabled protesters' front door battle

Social Accountability 8000 is an independent certificate awarded by the Council on Economic Priorities, an interest group based in New York.

ECONOMIST: Business ethics

The review group said an appeal to the Supreme Court should be competent only where the High Court has granted a certificate showing that the case raises a point of law of "general public importance".

BBC: Scotland Bill Committee 2