堆石界标

例句：

1. 1. The construction crew used a pile of stones to mark the edge of the new road.
   施工队用一堆石头来标记新路的边缘。
2. 2. The stone markers were carefully placed to ensure they would not be accidentally knocked over.
   这些石碑被小心翼翼地放置，以确保它们不会被不小心撞倒。
3. 3. The team leader made sure everyone understood the importance of these stone markers and their role in marking the boundaries of theproperty.
   团队负责人确保每个人都明白这些石碑的重要性以及它们在划定物业边界中的作用。