从那时起,我一直渴望和他面对面地聚会.Ever since then I've been longing to meet him face to face.我和她面对面坐着.I sat face to face with her.阅读印在纸上的内容远不如与伟大的思想家面对面探讨那般受益。The printed word is no substitute for personal discussion with a great ...
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。...