When the source and target of a message is an object or class, the label is the signature of the method invoked in response to the message.

当消息的源和目标为对象或类时，标签是响应消息时所调用方法的签名。

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LABEL_FOR indicates a given component is the label for a given target.

LABEL_FOR表明给定组件是给定目标的标签。

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Action label: the label to be displayed as the C2A pop-up menu for this target.

Action Label：作为该目标c2a弹出菜单显示的标签。

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"The holy grail is a heat-resistant varietal that provides quality coffee, " says Patrick Criteser, chief executive of Coffee Bean International, which supplies the private-label coffees to such retailers as Target and Kroger and is part of World Coffee Research.

WSJ: The Indiana Jones of Coffee

She probably could have landed a high-end label partnership, but why bother when her target would never shell out that kind of money?

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