矿井瓦斯安全：防范措施与监测技术探讨完美世界寻宝天行

　　After the revelation that Georg has seduced her, Maria is driven away by her father. Georg, fearing the wrath of Maria's father, has swiftly abandoned the girl and left for the mining town of Sankt Anton, where he expects to hide easily amongst the large population of colliers. Maria must care for herself, and ends up in Sankt Anton, where she attempts to rebuild her life. Ther... (展开全部)