Library backup
[计] 库后援, 库后备
🧩 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
Good afternoon. What's the trouble?
下午好。有什么不舒服吗？
Don't forget to write to me.
不要忘记写信给我。
One Monday, there were fewer people in the shop than usual when the woman came in,
有一个星期一，当这位妇女走进这家商场时，里面的人比往常少，