A broad area of open land,often high but poorly drained,with patches of heath and peat bog s.

沼澤一片大面積的開闊地欧美国产黄色一级，通常很高但排水不好欧美人与动性行为另类，有成片的荒野和泥炭田

There are two types of coal formation: a local land accumulation in which the original substance of rotten plant material congregates in a peat bog where plants are growing; b distant land accumulation in which the original substance, which is from nearby areas or somewhere distant, of rotten plant coal congregates in a fresh water basin, lagoon, delta or lake through movements.

成煤原始物質(zhì)的堆積方式分為2大類型：原地堆積——腐植煤的原始物質(zhì)聚集在泥炭沼澤中植物自身繁殖的地方；異地堆積——腐植煤的原始物質(zhì)是從相鄰地區(qū)或大陸更遠的一些地段国产超黄色视频，經(jīng)過搬運国内久久久久久久久久精品影院，聚集在淡水盆地、瀉湖小黄片真人视频毛片、三角洲另类国产资源在线观看、湖泊之中。

A broad area of open land, often high but poorly drained, with patches of heath and peat bogs.

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In addition, there are constrained by the rock of the limestone soil and purple soil, and thick bone soil, paddy soil, brown soil, aquic soil, peat, marsh land, Carboniferous soil, rocky soil, mountain meadow soil, red clay, the new soil, such as soil type.

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