英文：Any of certain other wetland areas, such as a fen, having a peat substrate.
中文：沼泽地区任一种其它的湿地，有泥炭底面，如沼泽
英文：Aquatic animals that live in the substrate of a body of water, especially in a soft sea bottom.
中文：底内动物生活在水体底部的水生动物，尤指栖于松软海底的水生动物
英文：Microelectronic circuits in which the passive components and their metallic interconnections are formed directly on an insulating substrate and the active semiconductor devices(usually in wafer form) are added subsequently.
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