Methane(CH4) is often regarded as the second most important greenhouse gas after carbon dioxide. 甲烷(CH4)常被认为是仅次于二氧化碳的重要温室气体。
A methane molecule is composed of one carbon atom attached to four hydrogens. 甲烷(CH4)分子由1个碳原子与4个氢原子构成。
The blasts were caused by pockets of methane gas that ignited. 爆炸是由甲烷(CH4)气囊被引燃造成的。
Methane(CH4) gas does collect in the mines around here. 周围的矿井里的确有沼气聚积。
Among the common toxic gases are sulfur dioxide, methane, the oxides of nitrogen, ammonia, hydrogen sulfide, and hydrogen cyanide; and ( most commonly ) carbon monoxide. 常见的有毒气体有二氧化硫、甲烷(CH4)、氧化氮、氨、硫化氢、氰化氢以及最常见的一氧化碳。