ㄎㄨㄤˋㄋㄢˋkuàngnàn

矿难
  1. 礦場採礦發生重大事故常見瓦斯爆炸爆炸瓦斯突出透水事故礦井失火頂板坍方

mining disaster
catastrophe minière
Grubenunglück (S)​