warm up phenomenon

例句：

1. 1.During the game, the athletes warm up before the actual match to prepare for the next stage.
   在比赛开始前，运动员们会进行热身准备，为接下来的比赛做准备。
2. 2.The researcher found that the warming up phenomenon is closely related to the performance of the athletes.
   研究者发现，预热现象与运动员的表现密切相关。
3. 3. The team coach emphasized the importance of warming up before the big game, as it can greatly improve their performance.
   球队教练强调了在大比赛中热身的重要性，因为它可以极大地提高他们的比赛表现。