coal seam gas

例句：

1. 1. The mineis producing a significant amount of coal seam gas.
   该矿井正在大量生产煤层气。
2. 2. Coal seam gas isa valuable resource that can be used forheating and electricity generation.
   煤层气是一种宝贵的资源，可用于供暖和发电。
3. 3. Dueto the high cost of extraction and transportation, coal seam gas is not widelyused in many areas.
   由于提取和运输成本高昂，煤层气在许多地区并未得到广泛应用。