height-measuring sextant

例句：

1. 1. The height-measuring sextant was used to measure the height of the tallest tree in the forest.
   使用测高六分仪测量森林中最高大的树的高度。
2. 2. The scientist used the height-measuring sextant to determine the exact height of the mountain.
   科学家使用测高六分仪来确定这座山的确切高度。
3. 3. The height-measuring sextant was a crucial tool for surveying the terrain before construction began.
   测高六分仪是施工前勘测地形的关键工具。