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甲烷 [jia3 wan2]
☊
methane CH4 ☊
Methan, Methangas, Grubengas (S, Chem)
☊
甲烷 [jia3 wan2] ☊ 
methane CH4 ☊ 
Methan, Methangas, Grubengas (S, Chem) ☊ 甲烷 [jia3 wan2] ☊ methane CH4 ☊ Methan, Methangas, Grubengas (S, Chem) ☊