A very helpful tool to define this dimension is a service classification system.

要定义这个维度，一个非常有用的工具是一个服务分类系统。

youdao

It is worth mentioning that classes of service add a third dimension to what was a two-dimensional network.

值得提及的是，分类服务向二维网络增添了第三个维度。

youdao

His or her "play" is to always complain about QoS, and at first the service provider improves this dimension.

他或她的“策略”是总是抱怨QoS，起先服务提供者会改进这一维度。

youdao

He describes it as a refocusing of what the health service is there for, saying the NHS of the future "will need to move from a medicinal service with a care dimension to a care service with a medicinal dimension".

BBC: Why can't the NHS get basic care right?