identity level of concept概念: concept; conception; notion; ...守恒: conservation; conserve阶段: stage; phase; period; gradat ...概念化阶段: conceptualization stage概念阶段: concept phase; conceptual phase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:概念守恒阶段,即可在微信中查询翻译