Backup facility
[电] 备份设备, 备用设备
🧩 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
She wanted something to do, I guess.
我猜想她想找点事做吧。
The mountain has brought forth a mouse.
虎头蛇尾。
Someone is ringing the bell.
有人在按门铃。