贝美格

例句：

1. 1. The seashells on the beach are a popular souvenir for tourists.
   海滩上的贝壳是游客的热门纪念品。
2. 2. The oyster is an important food source for humans.
   牡蛎是人类的重要食物来源。
3. 3. The scallop shells were used as building materials in ancient times.
   在古代，蛤蜊壳被用作建筑材料。