beach deposit

例句：

1. 1. The beach is littered with beach deposits of shells and seaweed.
   海滩上散布着贝壳和海藻的海滩沉积物。
2. 2.The scientists collected samples from the beach deposits to study the history of the ocean.
   科学家们从海滩沉积物中收集样本，以研究海洋的历史。
3. 3. The beach deposits are a valuable resource for archaeologists to study ancient human settlements.
   海滩沉积物是考古学家研究古代人类聚落的重要资源。