helicon wave

例句：

1. 1. Thekelp forest is a natural habitat formany marine species.
   海带森林是许多海洋物种的自然栖息地。
2. 2. The ocean waves crashedagainst the shore.
   海浪冲击着海岸。
3. 3. The currentflows from the west to the east.
   水流从西向东流动。