shale gas
noun [ U ] uk/ˈʃeɪl ˌɡæs/ us/ˈʃeɪl ˌɡæs/
页岩气
natural gas that is found in shale (= a type of soft, grey rock)
They argued that the extraction of shale gas by fracking would cause huge environmental damage. 他们论证到，采用水力压裂法抽取页岩气将对环境造成巨大破坏。