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1. The perigalacticum was arare and valuable species.
这种生物是稀有且珍贵的物种。
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2. The research on perigalacticum has significant implications for our understanding ofthe ecosystem.
对perigalacticum的研究对我们的生态系统理解具有重要意义。
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3. The discoveryof new species in thisregion is a significant contribution tothe study of perigalacticum.
在这个地区发现新的物种是对perigalacticum研究的重要贡献。