corcula

例句：

1. 1. The corcula on the shell was a beautiful shade of blue.
   贝壳上的壳是美丽的蓝色。
2. 2. He collected seashells from the beach every summer.
   他每年夏天都会从海滩上收集贝壳。
3. 3. The oyster is an important food source for many people.
   牡蛎是许多人的重要食物来源。