Coal and oil have more in common than a tendency to produce explosions when mistakes are made in the extraction process.
煤和石油都一样，在提取过程中出错，更具有发生爆炸的危险性。
2
Though more research into the damage shale-gas extraction may do to the environment is needed, there is no doubt that the extraction of coal already harms the environment a lot.
尽管需要对提取破环的页岩气做更多的研究，对环境同样有破坏作用，煤的开采无疑已对环境造成了伤害。
3
Secondly, he worked with the villagers to ensure they would get money from the coalextraction and be allowed to burn coal instead of firewood.