森林生态学家比农学家更关心天然生态系统和人工生态系统的内部机制。
Forest ecologists have been more concerned than agronomists with the inner mechanisms of natural and artificial ecosystems.
生态住宅是由天然材料建成的。
但是对这里唯一的生态系统——那些阻挡未来风暴的天然屏障——的保护措施却收效甚微。
But conservation efforts in this unique eco-system - which serves as a natural barrier to future cyclones - are inadequate.
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