名词
中文翻译：湖床
同义词：
['lake floor', 'lake bottom']
例句：
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1.The lake bed is covered with a thick layer of algae.
湖床上覆盖着厚厚的一层藻类。
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2. The scientists are studying the lake bed to find out how it was formed.
科学家们正在研究湖床，以了解它是如何形成的。
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3. The lake bed is home to many rare and endangered species.
湖床是许多稀有和濒危物种的家园。