名词
中文翻译：海滩上的贝壳
同义词：
['shell', 'oyster', 'pearl']
例句：
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1.The beachcombers were collecting shells for their collection.
海滩收集者正在收集贝壳。
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2.The oysters are a popular delicacy in the seafood market.
牡蛎是海鲜市场上的热门美食。
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3.The pearl was so valuable that it sold for a fortune.
这颗珍珠非常珍贵，价值连城。