ecosystem|ecosystems

珊瑚礁是一个美丽的海洋生态系统。

The coral reef is a beautiful ___ecosystem.

保护森林生态系统对维持地球生物多样性至关重要。

Protecting forest ___ecosystems is vital for maintaining Earth's biodiversity.

这个城市的文化生态系统由艺术家、音乐家和创意工作者共同构成。

The cultural ___ecosystem of this city is built by artists, musicians and creative workers.