I used to make the coal beds six to eight inches deep.

我过去常常把煤层挖到 6 到 8 英寸深。

It is found in beds, or layers, or seams, deep down in the earth.

从深深的地下的“矿床”或者叫“煤层”中找到的。

Some people believe that if this continues, oilfields and coal mines will become empty in the future.

些人相信如果况继续下去，油田和煤层在将来将会枯竭。

The seams of coal are often from three to eight feet thick, and there are layers of sandstone or of clay between them.

煤层的厚度般3英尺到8英尺，煤层之间砂岩或者粘土。

Cheap fossil energy, concentrated by geologic time and pressure in seams of coal or pools of oil, changed all that.

经过地质时间和压力的凝缩，富集于煤层和油田中的廉价化石能源改变切。

From the bottom of the shaft the miners cut low passages through the seams, and dig out the coal.

矿工们从矿井底部, 在煤层里开凿出巷道，把煤挖出来。

The coal sits in big fat seams close to the surface.

煤炭位于靠近地表的大肥煤层中。

In some coal mines seams of coal are worked which are three thousand feet below the surface of the ground.

在些煤矿里，矿工开采的煤层，足有地表之下3000英尺深。

In the coal itself it is very hard to tell one plant from another, for they have all been crushed together.

可，在煤层里面，就很难把棵棵植物分开，因为植物全都压碎，混在起。

Coal mining, which liberates the stuff from coal seams, is the second-biggest source of Chinese methane after agriculture.

煤炭开采从煤层中释放出物质，中国仅次于农业的第二大甲烷来源。

Then, to reach the buried coal seams, explosives are used to remove up to 800 feet of mountain elevation.

然后， 为到达埋藏的煤层，使用炸药移除高达 800 英尺的山体高度。

When I removed my hand it was black. I looked nearer, and found we were in a coal formation.

当我把手拿开时，它黑色的。我凑近看，发现我们身处煤层之中。

To get coal, men called miners, or colliers, dig deep holes straight down into the earth, until they reach the seams of coal.

有些叫做“矿工”的人，在地上挖出深洞，深洞笔直地向下延伸，直挖到煤层。

The beds of coal were separated by strata of sandstone or compact clays, and appeared crushed under the weight of overlying strata.

煤层被砂岩或致密粘土地层隔开，并在上覆地层的重量作用下被压碎。

A good example of this phenomenon is recorded in the coal-bearing layers of the 48-million-year old fossil site in Germany known as Geiseltal .

现象的个很好的例子在德国 4800 万年前的化石遗址 Geiseltal 的含煤层中记录的。

You will then walk along the low passages cut in the coal seam, and you will see men with pick-axes breaking down and cutting out great blocks of the coal.

然后你就可以沿着煤层中开凿的巷道走走，会看见人们拿着镐头，把大块的煤砍下来，挖出来。