Even less fortunate was the extension of this type of thinking to include animals as well as plants.
更不幸的是，这种思考方式从植物群体扩展到了动物群体。
2
The topics discussed included the co-ordinated study of the destruction of forests, as well as how to combat forest fires and the extension of European research programs on the forest ecosystem.
讨论的主题包括对森林破坏的协同研究，如何扑灭森林火灾，以及关于森林生态系统的欧洲研究项目的扩展。
3
This enables any user on the system to exchange files in a secure manner, as long as their counterpart offers this extension as well.