long tail
柯林斯词典
1. N the segment of a market representing the large number of products that sell in small quantities, considered by some to be of greater financial value than the few products that sell in very large quantities 長尾; 代表小批量銷售的大量商品的市場部分，與大批量銷售的少量商品相比，被認爲具有更高的金融價值[商業]
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