Methane is a flammable substance.

甲烷是易燃物质。

Microbes decompose methane as fuel.

微生物将甲烷分解作为燃料。

Officials said the excess methane gas may have caused the explosion.

官方称可能是过量甲烷气体导致了爆炸。

The blasts were caused by pockets of methane gas that ignited.

爆炸是由甲烷气囊被引燃造成的

Methane and propane are alkanes.

甲烷和丙烷是烷烃。

The ignition of methane gas killed eight men.

甲烷起火造成8人死亡。

Methane gas does collect in the mines around here.

沼气确实积聚在这周围的矿井中。

As the waste materials decompose, they produce methane gas.

废物腐烂时会产生沼气。

Release of methane into the atmosphere will be gradual, but steady.

甲烷释放到大气中会是逐渐的，但是稳定的。