marching compass

例句：

1. 1. The marching compasshelped us navigate through the forest.
   行军指南针帮助我们在森林中导航。
2. 2. The soldiersused the marching compass to findtheir way back to camp.
   士兵们使用行军指南针找到返回营地的路。
3. 3. The marching compass was essential for the army's successful operation.
   行军指南针对于军队的成功行动至关重要。