名词
中文翻译：多足类动物
同义词：
['sea squirt', 'starfish', 'sea cucumber']
例句：
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1.The polypi were swimming in the ocean.
多足类动物在海里游动。
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2.The starfish are a common sight on the beach.
海星是海滩上常见的景象。
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3.Sea cucumbers are often used as a delicacy in Chinese cuisine.
海参在中国菜中常被用作美味佳肴。