| 1. | Coal mining has always been a dangerous occupation .
采煤向来是一种危险职业。 |
| 2. | The owners of the coal mines had formed an association to protect their interests .
煤矿主们早组织了一个同业公会以保护他们自己的利益。 |
| 3. | Coal mines are ugly, and their development has a serious effect on animal and plant life .
煤矿龌龊，而煤矿的开发还会严重影响动植物的生长。 |
| 4. | The government had introduced a new law that was certain to reduce the profits of the coal mines .
政府制订了一条新法律，无疑要减少煤矿的利润。 |
| 5. | David attended the meetings of parliament regularly and made speeches on the miserable conditions in the coal mines and factories .
大卫按时参加议会的会议，并就煤矿和工人的糟糕的条件发表演说。 |
| 6. | Plastic woven fabric protecting top - plane in coal mine
煤矿井下假顶用塑料编织布 |
| 7. | The main shaft grouting technology in pengzhuang coal mine
彭庄矿井主井注浆技术 |
| 8. | Identification method of coal mining damage technology
煤矿开采损害技术鉴定方法 |
| 9. | Sewage treatment and practice in coal mine hospital
煤矿医院污水处理技术及实践 |
