ecological age

例句：

1. 1.The study of ecology is crucial for understanding the ecological age of a species.
   研究生态学对于理解物种的生态年龄至关重要。
2. 2.The decline in population size is directly related to the ecological age of the species.
   种群数量的减少与物种的生态年龄直接相关。
3. 3.As the ecosystem changes, the ecological age of certain species may increase or decrease.
   随着生态系统的变化，某些物种的生态年龄可能会增加或减少。