心情浮动

例句：

1. 1. The boat floated on the calm water.
   船在平静的水面上漂浮。
2. 2. The waves were swaying the boat back and forth.
   波浪来回摇晃着船。
3. 3. The ship drifted aimlessly in the sea.
   这艘船在海上漫无目的地漂流。