peat surface layer 泥炭表层
Peat layer is on the continental shelf there was lush vegetation of a proof.
泥炭层是大陆架上曾经有茂盛植物的一个印证。
Peat layer contains sand, containing not yet fully decomposed plant leaves, and a high content of organic matter.
泥炭层中含有泥沙，含有尚未完全腐烂的植物枝叶，有机物质含量极高。
The soft soil refers to the soft clay deposited under water or mud-based formation, sometimes with a small amount of rot folder mud or peat layer.
软土是指以水下沉积的软弱粘性土或淤泥为主的地层，有时也夹有少量的腐泥或泥炭层。
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