track following servosystem

例句：

1. 1. The car was found on the tracks leading to the station.
   这辆汽车被发现在通往车站的轨道上。
2. 2. The team followed the trail of breadcrumbs left by a bird.
   队伍沿着鸟留下的面包屑踪迹前进。
3. 3. The scientist used a tracker to follow the animal's movements.
   科学家使用追踪器来跟踪动物的行动。