形容词
中文翻译：地下的
同义词：
['subsurface', 'subterranean', 'substratum例句：1. The geologist found a layer of subbituminous shale beneath the surface.（地质学家在地表下发现了一层下伏的页岩。）2. The subbituminous coal mine is located in the northern part of the country.（这个下伏煤田位于该国北部。）3. The subbituminous layers are rich in minerals that can be used for industrial purposes.（下伏层富含可用于工业的矿物资源。）']
例句：
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1. The geologist found a layer of subbituminous shale beneath the surface.
地质学家在地表下发现了一层下伏的页岩。
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2. The subbituminous coal mine is located in the northern part of the country.
这个下伏煤田位于该国北部。
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3. The subbituminous layers are rich in minerals that can be used for industrial purposes.
下伏层富含可用于工业的矿物资源。