Highly explosive gas is naturally found in coal mines.
煤矿中天然存有高爆气体。
Many people came to the coal mineindentured for several years.
许多人到煤矿来,是因为契约规定必须服务几年.
Coal miners have to work under the ground.
煤矿工人须在地下工作.
They are mining for coal.
他们在开采煤矿.
It was still dark when five coaches started to ferry the miners the 140 miles from the Silverhill colliery.
天还黑着，就有5辆大巴开始从距银山煤矿140英里的地方出发运送矿工。
Peopel still mine for coal in this area.
人们还在这个地区开采煤矿。
It was a better community then when all the pits were working.
所有的煤矿都在开工的那个时候，这个社区的情况要更好一些。
Rescue workers were sent to relieve the trapped coal miners.
抢险人员被派去解救被困在井下的煤矿工人.
He sketched the coal miner in a few minutes.
他几分钟就画了一幅那位煤矿工人的素描.
Coal miners have to work in the depths of the earth.
煤矿工人必须在地表深处挖煤.
The miners are asking for another increase in pay.
煤矿工人正在要求再次加薪.
In the coal shaft the working - men pushed the coal cars sullenly.
工人们在煤矿里慢吞吞地推着煤车.
We decided to open out a coal mine near the city.
我们决定在城市附近开发一煤矿.
Like China's Taihang Mountains , they are rich in coal and hydroelectric potential.
象中国的太行山一样, 这条山脉也富有煤矿和水电资源.
They extract ten million tons of coal each year from underwater mines.
他们每年从水下煤矿中采掘一千万吨煤.