名詞 ecosystem:

1. a system formed by the interaction of a community of organisms with their physical environment

1. An organism, often a bacterium or fungus, that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem.
   腐生菌; 腐生物一種有機物，通常是細菌以死的動植物為食并把它們分解，藉此為生態(tài)系統(tǒng)提供有機養(yǎng)分

ec.o.sys.tem

n.（名詞）
An ecological community together with its environment, functioning as a unit.
生態(tài)系統(tǒng)：生物群落及其環(huán)境形成的生態(tài)單位，它作為一個整體發(fā)揮作用