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1.The Pelodictyon is a rare species of sea urchin that can be found only in the Pacific Ocean.
佩洛迪克托斯是一种罕见的海胆，仅在太平洋发现。
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2.The Pelodictyon's unique ability to adapt to its environment has made it one of the most successful marine organisms.
佩洛迪克托斯独特的适应环境能力使其成为最成功的海洋生物之一。
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3. In the study, scientists discovered that the Pelodictyon could use its bioluminescent organs to communicate with other animals.
研究中，科学家发现佩洛迪克托斯可以利用其发光器官与其他动物进行交流。