Hypernyms:gas
Inherited Hypernyms:firedampgasfluidmatterphysical entityentity
单词 | firedamp |
释义 | Firedamp nnoun.substancea mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air Hypernyms:gas Inherited Hypernyms:firedampgasfluidmatterphysical entityentity |
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