名词中文翻译
中文翻译：上层地层
同义词：
['upper layer', 'upper crust例句：1. The geologists are studying the upper stratum to determine its age.（地质学家正在研究上层地层，以确定其年龄。）']
例句：
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1. The geologists are studying the upper stratum to determine its age.
地质学家正在研究上层地层，以确定其年龄。
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2. The upper stratum is composed of sedimentary rocks.
上层地层由沉积岩组成。
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3.The upper stratum is rich in minerals and has great potential for mining.
上层地层富含矿物，具有巨大的开采潜力。