求翻译：（2）泥炭层，最大厚度9 m左右，由半分解和已分解的植物残体组成，其中夹有薄层状砂层或透镜体；（3）腐泥层或腐殖质层；（4）亚粘土层及粘土层。是什么意思？

(2) peat layer, the maximum thickness of about 9 m, half-decomposed and the decomposition of plant residues, of which there are bedded sand layers or lenses; (3) The sapropel layer or humus layer; (4) Asian Clay and clay.

(2) the largest peat layer thickness, about 9 m by a half-broken down, and has been broken down by body composition, and plant them with a thin layer of sand or lenses; and (3) corruption mud Layer, or humus layer; and (4) the clay layer and clay layer.

(2) peat coal level, about greatest thickness 9 m, and the plant remains which decomposes has been composed by half decomposition, in which clamps has the thin sheet sand or the lens; (3) spoiled putty level or mold-cover; (4) clay loam level and clay layer.

(2) the peat layer, maximum thickness of about 9 m, half composed of decomposition and decomposition of plant residues, which clamp the thin sand layers or lenses; (3) rotting mud or humus layers, (4) clay loam and clay.

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