n.生态系统( ecosystem的名词复数 )...

ecosystems的音标：...

There are highly sensitive and delicately balanced ecosystems in the forest.森林里有高度敏感、灵敏平衡的各种生态系统.Madagascar's ecosystems range from rainforest to semi-desert.马达加斯加生态系统类型多样，从雨林到半荒漠等不一而足。Temperate forest ecosystems oc...