warm up
phrasal verbwarm up
- to prepare for physical exercise or a performance by doing gentle exercises or practice
（为体育活动或表演）做适应性练习，做准备活动；热身 - (of a machine, an engine, etc.) to run for a short time in order to reach the temperature at which it will operate well
暖机；预热
warm up | warm somebody/something up
- to become more lively or enthusiastic; to make somebody/something more lively or enthusiastic
（使）活跃起来，热情起来 - The party soon warmed up.
聚会很快活跃起来。
- The party soon warmed up.
warm something up
- to heat previously cooked food again for eating
把（冷饭菜）热一热