Miners built the tunnel to drain water out of the mines.
矿工们开掘了隧道以将水排出矿井。
The digging had left a network of abandoned mines and tunnels.
挖掘留下了满地密布的废弃矿井和隧道。
这些矿井正在被重新开发。
并且中国的矿厂大都老旧。
新矿正在开发。
He had to obtain permission to go into mines.
他必须获得许可才能进入矿井拍摄。
Companies with mines have the advantage.
公司拥有矿山就比别人有优势。
Most supply thus comes from a handful of mines.
因此，大部分供应来自少数几个矿场。
Most coal mines are buried deep underground.
大多数煤矿都是深埋地下的。
He tried to regularize the management of coal mines.
他试图将煤矿的管理系统化。
New mines are planned to expand the market further.
新的矿山开采计划将会进一步打开市场。
Miners had to have some light in the dark mines.
矿工们在黑暗的矿井里工作必须要有亮光。
Miners had to have some light in the dark mines .
矿工们在黑暗的矿井里工作必须要有亮光。
Now it has changed. Companies with mines have the advantage.
公司拥有矿山就比别人有优势。
To be sure, the mines are much safer than just six years ago.
可以肯定，仅仅过去六年，矿业已经要安全得多了。
The method has been gradually used in underground mines.
该方法已逐步在地下矿应用。
These mines are expected to go into production next year.
这些矿预计明年可以投产。
The extraction of coal from these deep mines is expensive.
从这些深矿中取得煤是很昂贵的。
To be responsible for the rectification and closure of coal mines.
负责指导煤矿整顿关闭工作。
Safety in production at coal mines is a task of primary importance.
安全生产是煤矿企业的头等大事。
"The summer holidays are over," said Tom. "Back to the salt mines."
“暑假结束了，”汤姆说，“又要啃书本了。”
Why did parents permit their children to work in mines and factories?
为什么父母会允许自己的孩子去矿山和工厂里面做工呢？
Australia, for one, has the world's biggest reserves, but only three mines.
以澳大利亚为例，该国拥有世界最多的铀储量，但只有三口矿井。
As mines age, ore grades decline, since the best stuff is usually dug up first.
随着矿山年龄的增长，铁矿石的等级下滑，因为最好的往往被最先发掘。
The roof control design method may be used in mines with similar conditions.
采用的控顶设计方法可以在类似矿井条件下推广应用。
The roof control design method may be used in mines with similar conditions.
采用的控顶设计方法可以在类似矿井条件下推广应用。
应用推荐