掘进机在煤矿开采中被广泛使用。
煤矿开采工作机械化水平的不断提高。
The mechanized level of coal mining work is developing rapidly.
煤矿开采比较容易出事故，煤矿事故又主要是瓦斯爆炸和煤尘爆炸。
There are usually accidents in coal mines, which are mainly gas explosion and dust explosion.
他们在开采煤矿。
我想我们不开采利用自己的煤矿实在是目光短浅。
I think we're being very short-sighted in not exploiting our own coal.
人们还在这个地区开采煤矿。
煤矿地下开采事故屡见不鲜。
Accidents during underground mining of coal are nothing new.
煤矿地下开采事故屡见不鲜。
Accidents during underground mining of coal are nothing new.
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