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

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