Unscheduled maintenance
[计] 出错维修; 非预定维修
🧩 词语组成解析
[计] 不定期的
🗣️ 情景例句
A large, please.
请给我大杯的。
Try (your friend) before you trust him.
朋友要经考验，才能取得信任。
I must hurry. I want to get home in time to see the football match on television.
我得赶快，我想按时回家，去看球赛。