n.海貝；貝殼

She walk along the beach collect seashell. 她沿海灘收集海貝。

Small seashells were often used as a primitive kind of money. 小貝殼常被用作簡單的貨幣。

Have you ever held a seashell to your ear and heard the roar of the ocean? 你曾把貝殼貼在耳邊，傾聽過海洋的呼嘯嗎?

n.海洋貝類