warm-up
/ˈwɔːmʌp/noun
1- a period or act of preparation for a match, performance, or exercise session, involving gentle exercise or practice热身, 准备活动。
1.1
warm-ups
N. Amer. a garment worn during light exercise or training; a tracksuit〈北美〉锻炼服, 运动衣。
1.2
- a period before a stage performance in which the audience is amused or entertained in order to make it more receptive to the main act（使观众更容易进入欣赏主要表演状态的）逗乐阶段。