名词
中文翻译：自然沉积物
同义词：
['natural debris', 'natural deposition']
例句：
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1.The river flows through a valley with natural sediment deposited by the glaciers.
这条河流流经一个山谷，山谷中被冰川沉积的自然沉积物。
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2.The scientists found that the natural sediment in the ocean is crucial for maintaining marine ecosystems.
科学家们发现，海洋中的自然沉积物对于维持海洋生态系统至关重要。
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3.The construction of the new bridge will require removing the natural sediment from the riverbed.
修建新桥将需要从河床移除自然沉积物。