dual classificationtwofold classification双重: double; dual; twofold; dupli ...划分: divide; partition; repartiti ...三重划分: threefold classification重划分区: re-zoning重划: re-row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:双重划分,即可在微信中查询翻译