跑步壮的

例句：

1. 1. The dog is running after the ball.
   狗在追球。
2. 2. She ran into the store to buy some milk.
   她冲进商店买牛奶。
3. 3. He ran the marathon in under two hours.
   他以不到两小时的时间完成了马拉松赛跑。