ecosystem /ˈiːkoʊˌsɪstəm/ noun plural ecosystems
plural ecosystems
Learner's definition of ECOSYSTEM
[count]
: everything that exists in a particular environment生态系统 ◊ An ecosystem includes living things, such as plants and animals, and things that are not living, such as rocks, soil, sunlight, and water.生态系统包括生物，如植物、动物；也包括非生物，如岩石、土壤、阳光和水。