entire ecosystems were washed away. 整个生态系统被冲走
The Amazon is one of Earth's most endangered ecosystems... 亚马逊是地球上濒临灭绝的生态环境之一
Zootopia has 12 unique ecosystems within its city limits. 动物城境内有12个独特的生态系统
This is one of the world's most productive ecosystems. 这是世界上生产力最高的生态系统之一
The rainforest's great diversity has come at a cost. It has made them the most finely balanced ecosystems in the world 雨林的物种多样性正在消失 而雨林却是维持地球生态系统微妙平衡的关键