cidr无: not have; there is not; be w ...级别: rank; level; grade; scale; s ...域内: intra-area; intra-domain路由: route区域内路由选择: intra-area routing下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:无级别域内路由,即可在微信中查询翻译