参考例句

1. A succession of ecological communities originating in a dry habitat.

   旱生演替系列在干燥的地面上繁衍的一个生态群落的自然演化

2. The natural vegetation succession is a major means of ecological rehabilitation in Karst area.

   植被的自然演替是岩溶地区生态重建的主要方式。

3. To ease the contradictions between human beings and farm animals and between grass supply and farm animals, Tibet has taken a succession of measures to strengthen the rational utilization and ecological protection of natural grassland.

   为解决好人畜和草畜矛盾，西藏采取了一系列措施，加强天然草地的合理利用和生态保护。