meth.ane
methane的音标和读音：
DJ音标发音： [ˈmeθˌein]
KK音标发音： [ˈmɛθˌen]
methane的词性：
n.（名词）
1. An odorless, colorless, flammable gas, CH4, the major constituent of natural gas, that is used as a fuel and is an important source of hydrogen and a wide variety of organic compounds.
甲烷：一种无味，无色，易燃汽体，CH4，是天然气的主要组成部分，被用作燃料，是氢和其它多种有机化合物的重要来源