The other is to restore some of the evolutionary and ecologicalpotential that has been lost in North America.
另一个是对一些在北美丧失的进化和生态潜力进行恢复。
2
Though many problems exist in recycling used seats from cars there is a great economical and ecologicalpotential for the recycling of these components.
The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures.