贫困是顽疾，“顽”在成因复杂、难以根除、极易反复。
public static void RegisterAllRoutes(RouteRegistry registry)
，这一点在旺商聊官方下载中也有详细论述
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One law professor told the BBC that "the nature of the [Crawford] contract was peculiar", and that because of the "significant uncertainty" at the time it was drawn up, they would have expected to see a shorter one that had a cap on the number of claims processed.