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 长尾; 代表小批量销售的大量商品的市场部分，与大批量销售的少量商品相比，被认为具有更高的金融价值[商业]
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