n.(海滩上的)高潮痕，(污水在浴缸内侧留下的一圈)垢痕

The high tide left a tidemark on the rocks.
高潮在岩石上留下了痕迹。
The beach was marked with the tidemark of the last wave.
海滩上留有最后一波潮水的痕迹。
The tidemark showed how far the water had risen during the storm.
潮水标记显示了风暴期间水位上升到了多高。
After the rain, the tidemark on the wall indicated the level of flooding.
下雨后，墙上的潮水线表明了洪水的高度。
The old pier bears the tidemarks of many years of seasonal changes.
老码头承载着多年季节变化的潮水痕迹。
The tidemark on the riverbank revealed the river's usual range.
河岸边的潮水线揭示了河流的通常水位范围。
The tidemark served as a reminder of the powerful force of nature.
潮水痕迹提醒我们自然力量的强大。
The aquarium's tank had a distinct tidemark from the daily water changes.
水族馆的水箱因每日换水而有一明显的潮水线。
The ancient ruins near the shore showed tidemarks of civilization long gone.
海岸附近的古代遗迹展示了早已逝去文明的潮水印记。
The gardener noted the tidemark to ensure plants were not overwatered during high tide.
园丁通过观察潮水线，确保在高潮时植物不会被过度浇水。