ecosystem

The introduction of an invasive species can ruin the entire local ecosystem.

(Chinese) 入侵物种的引入可能会破坏整个当地的生态系统。

A desert is a harsh ecosystem where plants must survive with very little water.

(Chinese) 沙漠是一个严酷的生态系统，植物必须在极少水分的情况下生存。