city eocosystem的用法和樣例：
例句
- This paper deals with interacton between the urban ecologic system and environment in Xuzhou City.
本文研究了徐州市城市生態系統與自然環境之間的相互作用。 - Taking the coastal city of Weozhou as an example, the advantages of greenland, river, tourism and seabeach resources were fully used according to the actual situation.
摘要在城市生態系統中，以自然要素為主的自然生態環境在城市中的發展與保護越來越受到各地政府的重視。
