名词
中文翻译：自然衰败
同义词：
['natural decay', 'natural erosion', 'natural decaying']
例句：
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1. The old tree was a symbol of the town's natural detrition.
这棵老树是该镇自然衰败的象征。
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2. The soil was naturally eroding due to the constant rain.
由于持续的雨水，土壤正在自然地侵蚀。
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3. The forest is naturally decaying due to human activities.
由于人类活动，森林正在自然地衰败。