nature reserves短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 自然保护区 Gas and wood burning energy saving stoves and cookers were designed specifically for project communities and were successfully demonstrated in all13 nature reserves. 项目专门为项目社区设计了节能型炉灶和炊具，并成功地在全部13个保护区开展了这方面的示范。 worldbank