In other words, poor and rich both over-exploit the natural world, but for different reasons.
换句话说,穷国和富国都过度开发自然世界,但二者出于不同的原因。
In addition, hunger and poverty often compel the poor to over-exploit the resources on which their own livelihoods depend.
此外,饥饿和贫困往往迫使穷人过度开发其生计所依赖的资源。
An ancestral species might have adapted to exploit a particular ecological niche on one island and then traveled over water to colonize other islands.
一个原始物种可能已经适应了利用一个岛屿上特定的生态位,然后在水上迁徙到其他岛屿定居。
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