running requirements

例句：

1. 1. The team is running a marathon in the park.
   这个团队正在公园里跑步。
2. 2. The car is running smoothly on the highway.
   汽车在高速公路上平稳行驶。
3. 3.The train is running late due to heavy traffic.
   由于交通拥堵，火车晚点了。