interdependence       
noun [ U ] uk/ˌɪn.tə.dɪˈpen.dəns/ us/ˌɪn.t̬ɚ.dɪˈpen.dəns/
 互相依赖,互相依存
the fact of depending on each other
  our interdependence as a global society 我们作为一个全球社会所存在的相互依存关系 
 The conference discussed the possibility of regional economic interdependence. 会议讨论了区域经济相互依存的可能性。 
 See: interdependent
 - More examples
 - They need our market, and we need their energy, and so there is an interdependence.
 - People should acknowledge their interdependence with others and with the earth itself.
 - He spoke of the growing interdependence of countries sharing goods and services.