N-COUNT
准备活动;热身活动
A warm-up is something that prepares you for an activity or event, usually because it is a short practice or example of what the activity or event will involve.
例句
The exercises can be fun and a good warm-up for the latter part of the programme...
这些练习很有趣，而且为该课程后面的部分做了很好的铺垫。
The criticism was merely a warm-up for what is being prepared for the finance minister...
对于财政部长即将面临的困境而言，这些批评只是个小小的开始。