甲烷水合物 jiǎwánshuǐhéwù methane hydrate Definitions Defs Origin Strokes Stroke Words Sentences Sents 甲烷 jiǎwán methane methane; CH4. A colorless, odorless, flammable gas that is the primary component of natural gas and biogas.水合物 shuǐhéwù hydrate hydrate; a hydrated compound
