Natural ecological的用法和樣例：
例句
- Forest ecologists have been more concerned than agronomists with the inner mechanisms of natural and artificial ecosystems.
森林生態學家比農學家更關心天然生態系統和人工生態系統的內部機制。 - Accumulation of toxic substances in the biosphere is causing serious changes in the structure and function of natural ecosystems.
生物圈內有毒物質的積累，造成了天然生態系統的結構與功能的嚴重變化。
