海螺壳

例句：

1. 1. The seashells on the beach are beautiful and unique.
   海滩上的贝壳很美丽且独特。
2. 2. The crab is a delicacy in many Asian countries.
   螃蟹是许多亚洲国家的美食。
3. 3. The shellfish market is bustling with activity every weekend.
   每个周末，海鲜市场都热闹非凡。