名词
中文翻译：土层
同义词：
['subsoil', 'soil layer例句：1. The farmer carefully dug a hole in the soil to plant his vegetables.（农民小心翼翼地在土壤中挖了一个洞来种植他的蔬菜。）']
例句：
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1. The farmer carefully dug a hole in the soil to plant his vegetables.
农民小心翼翼地在土壤中挖了一个洞来种植他的蔬菜。
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2. The scientist studied the properties of the soil layer to improve agricultural productivity.
科学家研究了土壤层的性质以改进农业生产力。
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3. The construction workers used a drill to break through the soil layer and lay the foundation for the new building.
建筑工人使用钻机穿透土壤层，为新建筑打下基础。