afloat evaporimeter

例句：

1. 1.The boat was afloat in the calm water.
   船在平静的水面上漂浮。
2. 2. The fish swam afloat to catch its prey.
   鱼游到水面上捕食。
3. 3.The ship was afloat on the open sea.
   这艘船在广阔的海面上漂浮。