polyodontia

例句：

1. 1. The study of polyphenism is crucial for understanding the diversity of life on Earth.
   研究多孔动物对于理解地球上生物多样性至关重要。
2. 2. Polymorphism is a common feature in many species, allowing them to adapt to changing environments.
   多态性是许多物种的常见特征，使它们能够适应不断变化的环境。
3. 3. In some species, polymorphism can lead to genetic variation, which can be advantageous or disadvantageous depending onthe context.
   在某些物种中，多态性可能导致遗传变异，这取决于上下文可能是有利还是不利的。