二者都有优势和劣势，这些将在本文最后进行讨论。
Both have advantages and disadvantages that will be discussed at length in this document.
因为沃尔顿是第一个进入这些小型市场的人，他就拥有优势，这是其他稍后进入这些市场的竞争者所不及之处。
Because Walton was the first to go after these small markets, he had a significant advantage over any competitor that dared enter that terrain afterward.
可以由标准功能单元组成中介，然后进行部署，以帮助不匹配的请求者和提供者进行交互。
Mediations can be composed from standard units of functionality and deployed to facilitate interactions between mismatched service requesters and providers.
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