名词
中文翻译：四足动物
同义词：
['quadruped', 'tetrapod']
例句：
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1. The dinosaurs were known for their four-legged bodies.
恐龙以其四足身体而闻名。
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2. Many animals are tetrapods, including humans.
许多动物都是四足动物，包括人类。
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3. The discovery of the first tetrapods has sparked a new era in paleontology.
首次发现四足动物引发了古生物学的新纪元。