煤層氣 Save Sign in to save words Simplified: 煤层气 méicéngqì ㄇㄟˊ ㄘㄥˊ ㄑㄧˋ coalbed methane Character by character 煤(méi)coal 層(céng)pile on top of one another 氣(qì)gas A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0