underground gasification of coal

例句：

1. 1. Theprocess of underground gasification is crucial forthe production of clean energy.
   地下气化过程对于生产清洁能源至关重要。
2. 2. Thecoal mine was successfully convertedinto a sustainable energy hub throughunderground gasification.
   通过地下气化，煤矿成功转型为可持续能源中心。
3. 3.The underground gasification technology has been widelyused in the field of renewable energy.
   地下气化技术在可再生能源领域得到了广泛应用。