phase in逐步: step by step; progressively; ...采用: put to use; adopt; use; empl ...分阶段: by stages; in stages引入: lead into; draw into; pull-i ...分阶段引入: phase-in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:逐步采用, 分阶段引入，即可在微信中查询翻译
