名词
中文翻译：覆盖层
同义词：
['overlying beds', 'overlying strata', 'overlying sequences']
例句：
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1. The geological survey revealed that theoverlying strata are composed ofsandstone and limestone.
地质调查发现，覆盖层由砂岩和石灰岩组成。
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2. The overlying strata havebeen dated to the Paleocene Era.
覆盖层被确定为白垩纪时期形成的。
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3. The overlying strata arebeing studied for their potential asa renewable energy source.
正在研究覆盖层作为可再生能源的潜在用途。