但是，相对于货物品质担保制度的贡献而言，这些问题确实是瑕不掩玉了。

Compared with the contribution of the quality warranty system, these problems are really minor and unimportant.

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公共物品困境是社会困境研究中的一个范式，它是指个体是否对公共物品的提供做出个人贡献的困境。

Public goods dilemma which means that whether individuals makes their contributions to public goods, is a paradigm in the study of social dilemma.

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