vane tip

例句：

1. 1. The wind vane on the flagpole is pointing towards the southwest.
   旗杆上的风向标指向西南方向。
2. 2.The apex of the mountain ridge is visible from the summit.
   山脊的最高点在山顶上可见。
3. 3. The wind vane was used to measure the direction of the wind.
   风向标用来测量风的方向。