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Sentence analysis
10Spans
Sentence
Span Details
炭鉱
coal mine; colliery; coal-mine shaft; coal pitnoun
では
contrastive で + は; then; well thengrammar
爆発ガス
firedampnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
濃度
concentration; density; cardinalitynoun
を
object markergrammar
常に
always; constantly; at all timesadverb
監視
monitoring; surveillance; observation; watchingnoun, suru verb
し
light/support verb with a noun or noun-like phrase-> するgrammar
ている。
ongoing or resultant stategrammar