baeckeol

例句：

1. 1. The shell of the sea creature is a fascinating feature.
   这个海洋生物的壳是一个令人着迷的特征。
2. 2.The bivalve is a type of mollusk that lives in saltwater.
   双壳类是一种生活在盐水中的软体动物。
3. 3.The mollusks are known for their beautiful shells.
   这些软体动物以其美丽的贝壳而闻名。