非常大的部署可能对每个业务单元增加第三层级的 ESB，以便将服务请求中转到该单元。

Very large deployments might add a third hierarchical-level ESB per business unit to mediate service requests local to that unit.

youdao

很多SOA实现在架构的几个层级都要求技术专家：业务流程、业务规则、数据服务、安全等。

Many SOA implementations require technology expertise in several layers of the architecture: business processes, business rules, data services, security, etc.

youdao

在服务器端，客户端应该只能看到数据槽目录层级。

On the server side, the clients should only see the slots directory hierarchy.

youdao