| 释义 |
back-up [英] [ˈbækˈʌp] [美] [ˈbækˈʌp] [名] 备份 [形] 作支援的 [动] 为…做备份 词频排名 3062/55435 学习人数 3982 难度等级 5/10 认知比例 46.51% 例句 a back-up earner (usually Mom) who could go into the workforce if the primary earner got laid off or fell sick 一个在家庭经济支柱失业或生病时可以走进职场的候补赚钱者(通常是母亲)(07.3) data back-up 数据备份 Back-up earner 后备挣钱者(考研) 助记 分析 在背后(back)准备上(up)的,不就是备份吗?
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