stadia slide rule

例句：

1. 1. The athletes are warming up in the stadium before the game starts.
   运动员们在比赛开始前在体育馆热身。
2. 2. The horses are being exercised in the stadia.
   马匹们正在赛马场训练。
3. 3. The stadia is a popular venue for sporting events.
   赛马场是体育赛事的热门场所。