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Methane is inflammable and explosion hazard gas as the basis of mash gas, firedamp and rock gas.
中文解释
甲烷作为瓦斯、天然气、沼气等的主要成分,是易燃易爆气体。
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pongid
Meath
hydrazine
bawled
清净
托尔伯特
club moss
revise completely
bath in hot water
as a source of food supply