heads-up
柯林斯词典
1. N-SING If you give someone a heads-up about something that is going to happen, you tell them about it before it happens. 警告; 事先通知[美国英语]
When the airlines decided to enforce these rules without giving anyone a heads-up, it created a lot of problems for travellers. 航空公司在决定执行这些规定时没有事先通知任何人，这给旅客带来了很多麻烦。
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heads-up
剑桥词典
- a warning that something is going to happen , usually so that you can prepare for it
小心，注意（用于提醒某事要发生）
This note is just to give you a heads-up that Vicky will be arriving next week . 这张便条只是提醒一下你维基下星期要来。
a short talk or statement about how a situation or plan is developing
有关形势（或计划）发展状况的讲话（或声明）
The boss called a meeting to give us a heads-up on the way the project was going. 老板召集会议通报计划进行的情况。 返回 heads-up