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放眼全国，小木耳变成大产业，小黄花成长为“致富花”……从南到北，从东到西，一个个“土特产”成为乡亲们增收致富的重要引擎，乡亲们的“金扁担”越挑越稳。
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Effective_Reach_9289
drop-oldest: Drops the oldest buffered data to make room. Useful for live feeds where stale data loses value.