贝壳学家

例句：

1. 1. He is a renowned shell-collector, known for his extensive collection of shells.
   他是一位著名的贝壳收藏家，以他的丰富贝壳收藏而闻名。
2. 2. The shell-collector has been working on a project to preserve the natural habitat of seashells.
   这位贝壳收藏家一直在进行一个项目，旨在保护海贝的自然栖息地。
3. 3. Shell-collecting is not only a hobby but also an important way to learn about marine life.
   收集贝壳不仅是一个爱好，也是了解海洋生物的重要途径。