You need a label property, which Exhibit actually treats as an identifier (in other words, it folds together objects with the same label).

您要使用label属性，实际上，Exhibit将其视为一个标识符(换言之，它将具有相同标签的对象合拢在一起)。

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Perhaps the only way that the Plaintiffs are able to include the concussion warning label on their Exhibit List is to argue that it should be admitted to prove the feasibility of precautionary measures.

FORBES: New Concussion Warning Label Won't Be A Big Score For Retired NFL Players Suing Helmet Manufacturer Riddell