名词
中文翻译：海豚
同义词：
['dolphin', 'porpoise']
例句：
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1.The chelidon is a beautiful creature that swims gracefully in the ocean.
海豚是一种美丽的生物，它在海洋中优雅地游动。
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2. Dolphins are known for their intelligence and playful nature.
海豚以其智力和活泼的性格而闻名。
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3. Porpoises are often seen jumping out of the water to catch fish.
海豹经常看到它们从水中跳起捕捉鱼。