Douglas sea and swell scale

例句：

1. 1. The Douglas sea and swell scale is used to measure the height of the water above the sea level.
   道格拉斯海潮计用于测量海水相对于海平面的高度。
2. 2. The data collected by the Douglas sea and swell scale was used to predict the weather for the next few days.
   通过道格拉斯海潮计收集的数据被用来预测未来几天的天气。
3. 3. The Douglas sea and swell scale is an essential tool for marine scientists to study the ocean currents and tides.
   道格拉斯海潮计是海洋科学家研究海洋洋流和潮汐的重要工具。