它假设产生顾客的顾客源是有限的。
每个顾客源在空闲的时候会以一定的产生率产生一个顾客。
Every source generates a customer with a certain generating rate when it's free.
从商家的角度来看,团购会为一家餐馆引入新的顾客源,其中一部分会变成常客。
From the merchant's perspective, a Groupon attracts new customers to a restaurant, some of whom might become regulars.
而更多的毒贩会花费精力去和顾客拉近关系,因为要找到一个新的客源也是难上加难。
But more dealers react by working harder to build a good relationship with customers, because finding new ones has become harder than before.
而更多的毒贩会花费精力去和顾客拉近关系,因为要找到一个新的客源也是难上加难。
But more dealers react by working harder to build a good relationship with customers, because finding new ones has become harder than before.
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