dip of shore horizon

例句：

1. 1. The dip of the shore horizon is a popular spot for birdwatching.
   海岸线地平线上的水洼是观鸟的热门地点。
2. 2. The trough of the shore horizon is visible from the beach.
   海岸线地平线上的水洼在海滩上可见。
3. 3. The trough on the shore horizon is a place where water collects during low tide.
   海岸线地平线上的水洼是在低潮时水聚集的地方。