methane
n. 甲烷，沼气
例句
Methane and propane are alkanes.
甲烷和丙烷是烷烃。
《牛津词典》
The ignition of methane gas killed eight men.
甲烷起火造成8人死亡。
《柯林斯英汉双解大词典》
As the waste materials decompose, they produce methane gas.
废物腐烂时会产生沼气。
