英语词汇has been retained怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	has been retained
释义	retained — 保留的 adj has-been — 过气
随便看	switch competitor switch component switch computer switch configuration switch connected switch connector switch constructs switch continuity switch continuous switch control box switch control device switch controller switch controlling switch control unit switch cover switch cubicle switch currency switch database switch delay switch deployment switch dimming switch driving switched switched 12 v out switched again

英汉双解词典包含2273206条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。

retained —