Preemergency
[计] 备用, 备急, 辅助
🗣️ 情景例句
Does the name Harvey Carlson ring a bell?
对Harvey Carlson这个名字有印象吗？
If he doesn't, will you wash the car?
如果他不，你会洗车吗？
After making a short test flight at 4,15 a.m.,
布莱里奥凌晨4点15分作了一次短距离试飞，