symbiosis
noun [ U ] uk/ˌsɪm.baɪˈəʊ.sɪs/ us/ˌsɪm.baɪˈoʊ.sɪs/
biology specialized（动物或植物间的）共生 a relationship between two types of animal or plant in which each provides for the other the conditions necessary for its continued existence
（人或机构间的）相互依赖的关系，互依关系a relationship between people or organizations that depend on each other equally
Related words: symbioticsymbiotically