Well there are many close substitutes, I could eat a burrito or a burger, I don't really need pizza.

披萨有很多相似替代品，我可以吃墨西哥卷饼或汉堡，不需要披萨。

A pure monopoly is a market controlled by one seller with a good or service that that has no close substitutes.

纯粹垄断是指一个卖方用一种商品或服务控制市场，并且它们没有近似替代品。