烃源岩是一种富含有机质和各种无机矿物的集合体，而有机酸普遍存在于沉积有机质中，是未熟-低熟原油和烃源岩抽提物的常见组分。
Source rocks are rich in organic and inorganic matter. Organic acids are commonly found in sedimentary organic matter, are common components of immature-low mature oil and source rocks extraction.
层理岩石是由一种或多种矿物晶粒、孔隙和胶结物等组成的集合体。
The physical and mechanical properties of layer rock and the acoustics characteristic have a close relationship.
现代大城市正是聚集了这种孤立建筑物的庞大集合体。
Modern metropolitans is the very hugeness aggregate of the isolated buildings.
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