mackerel scale

例句：

1. 1.The fisherman used to catch mackerel in the ocean.
   渔民过去在海里捕鱼。
2. 2.The mackerel scales are a valuable resource for scientists.
   鲭鱼鳞片是科学家宝贵的资源。
3. 3. The chef was experimenting with different types of mackerel scales.
   厨师正在尝试不同种类的鲭鱼鳞片。