track standard

例句：

1. 1. The police are tracking a suspect in the case.
   警方正在追踪这个案件的嫌疑人。
2. 2. She followed the trail of breadcrumbs to find the lost dog.
   她跟着面包屑的踪迹找到了丢失的狗。
3. 3. The scientists tracked the movement of the animals in the forest.
   科学家追踪了这些动物在森林中的行动。