Methane gas does collect in the mines around here.周围的矿井里的确有沼气聚积。The ignition of methane gas killed eight men.甲烷起火，致使8人丧生。Methane and propane are alkanes.甲烷和丙烷是烷烃。...
Methane is often regarded as the second most important greenhouse gas after carbon dioxide.甲烷常被认为是仅次于二氧化碳的重要温室气体。Methane is said to be hydrophobic.甲烷被称为疏水的.The project is consisted of a modern hoggery, goose house and me...
I thought they were laughing at me because I was ugly.我觉得他们嘲笑我是因为我长得丑。He carried on telling a joke, laughing his head off.他继续讲笑话，自己笑得前仰后合。He was still laughing when he heard the rasp of Rennie's voice.当他听到伦尼尖叫的声音时仍然...