gangan.<印地语>恒河(印度河流名)gangn.一群；一伙；(歹徒等的)一帮v.结成一伙；结伙袭击gang rapist轮奸犯Gang Zizhen龚自珍gang-bossn.班长；队长；工长gangne hill煤矸石山gangue loss矸损gangue wall矸石墙Gangliostat溴己双铵[抗高血压药]gang shears多刀剪切机gangue slop煤矸石质边坡ganglioform神经节形

1. The enormous coal gangue is difficult to use and causes environment pollution.
   煤矸石堆积如山，难以利用且污染环境。