whale fin

例句：

1. 1. The whale's fin was used as a tool for hunting.
   鲸鱼的鳍被用作狩猎工具。
2. 2.The whale's fin is a valuable resource for the fishing industry.
   鲸鱼的鳍是渔业行业的重要资源。
3. 3.The whale's fin has been used in traditional medicine for centuries.
   鲸鱼的鳍在传统医学中被使用了几个世纪了。