Backup system
[电] 后备系统
🧩 词语组成解析
backup
['bækˌʌp]
n. 支持，后援;阻塞;<计>备份文件;[乐]伴奏;
adj. 备用的，后补的;支持性的;伴奏的;
🗣️ 情景例句
to plan the refurnishing of the old library
计划重新整修老图书馆
The paperhanger is working with sticky wallpaper.
裱纸匠正在贴着附粘胶的壁纸。
Do you want to make it earlier or later?
要提早还是延迟呢？