名词
中文翻译：水底沉积物层
同义词：
['bottom sediment例句：1. The researcher found that the bottom sediment was rich in organic matter.（研究人员发现底部沉积物富含有机物。）']
例句：
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1. The researcher found that the bottom sediment was rich in organic matter.
研究人员发现底部沉积物富含有机物。
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2.The ocean floor is covered with a layer of bottom sediment.
海洋底部覆盖着一层沉积物。
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3. The bottom sediment plays an important role in the formation of the seabed.
底层沉积物在海床的形成中起着重要作用。