n.生态系统（ecosystem的复数）
diverse ecosystems───多样的生态系统
ecologists believed that species diversity made ecosystems stable.───生态学家曾一度认为，物种多样性使生态系统变得稳定。
Once the fire is out, the grass and shrub ecosystems should return quickly.───火一旦被熄灭，草和灌木的生态系统就会很快恢复。
How about beavers—ecosystems with beavers in waterways.───海狸怎么样——水道中包含海狸的生态系统。
Hurricane Katrina showed us how much we depend on healthy natural coastal ecosystems for shoreline protection.───飓风卡特里娜已经向我们展示出，我们对提供海岸保护的健康性自然海岸生态系统的依赖程度有多高。
Beginning to design urban ecosystems holistically rather than piecemeal might alleviate some of the pressure on natural ecosystems.───开始全盘、而不是零零碎碎地设计城市生态系统，或许能够使自然生态系统的压力有所缓解。
"It is common modern ecological strategy, and these guys were doing it in the earliest animal ecosystems on this planet, " she said.───“这是一种常见的的现代生态策略，但是这些动物早在这个星球刚刚产生动物生态系统的时候就已经这样做了，”她说。
She said the plastic is impacting ocean ecosystems, though she doesn't yet know to what extent.───戈尔茨坦表示这些塑料垃圾已经影响到海洋生态系统，尽管其危害程度尚不得而知。
Disturbance is one of the driving forces of forest community succession, and of significance in forest ecosystems.───干扰普遍存在于森林生态系统，是森林群落演替的驱动力之一。
Through the atmosphere, all parts of terrestrial ecosystems, forests, grasslands, are linked in a very effective way.───通过大气层，陆地生态系统的所有部分，森林，草原被有效地联系起来。
Unpolluted ecosystems release only small quantities of nitrate in streams.
Diversity is of fundamental importance to all ecosystems and all economies.
Other members of marine ecosystems have also died as a result of red-tide blooms.
Nature's services: societal dependence on natural ecosystems.
Ecosystems in the wild are made up of patches.
Nature's Services: societal dependence on natural ecosystems.
Ecosystems are interdependent networks of plants and animals.
There are highly sensitive and delicately balanced ecosystems in the forest.
In systems connected loosely, such as ecosystems, economic systems, and cultural systems, a less structured adaptation takes place.