tidal line

例句：

1. 1. The tidal line is a crucial factor in determining the location of the shoreline.
   潮汐线是确定海岸线位置的关键因素。
2. 2.The tidal line is often used to mark the boundaries of the sea.
   潮汐线通常用来标记海洋的边界。
3. 3. The tidal line is a delicate balance between human development and natural resources.
   潮汐线是人类发展和自然资源之间的微妙平衡。