Sbackup
[计] 后备程序
🗣️ 情景例句
When will you be able to deliver?
您什么时候可以交货？
I will be going home in October.
我将在十月份回家。
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，