track crossover

例句：

1. 1. The train tracks are straight and level.
   火车轨道直且平。
2. 2. She followed the dog's trail to find her lost pet.
   她沿着狗的踪迹找到了她的丢失宠物。
3. 3. The scientists used the satellite data to track the weather patterns.
   科学家们使用卫星数据来追踪天气模式。