running state of a process

例句：

1. 1. The caris running smoothly.
   汽车正在平稳地行驶。
2. 2.The machine is running at full capacity.
   机器正在满负荷运转。
3. 3. The train is running late due to the heavy traffic.
   由于交通拥堵，火车晚点了。