laser terrain-clearance indicator

例句：

1. 1. The laserterrain-clearance indicator is used to measure the distance between two points on the ground.
   激光地形清除指示器用于测量地面上两点之间的距离。
2. 2. The laser terrain-clearance indicator was developed to help farmers identify and clear obstacles in their fields.
   激光地形清除指示器被开发出来，帮助农民识别并清除田地中的障碍物。
3. 3. The laser terrain-clearance indicator can be used to mark the boundaries of a construction site or other areas where clearance is required.
   激光地形清除指示器可以用来标记建筑工地或其他需要清除的区域的边界。