4.the stone circle was environed by an expanse of peat soil.
圆形广场四周是一大片泥炭地。
5.Bogwood:Wood that has been preserved in a peat bog.
泥炭木:沼木久埋于泥炭沼泽之中树木。
6.The kaolinite tonstein in the seam 5# is formed by acidic ash alterated in the acid medium in peat bog in tongchuan district.
铜川矿区5#煤层中高岭泥岩夹矸是由酸性火山灰在近地表成煤条件下经酸性水淋滤、蚀变而成。
7.Chinese medicine residue contained less water than peat, and subirrigation could promote the growth and quality of poinsettia grown in medicine residue-substrate.