n.防火防潮;沼气,甲烷
例句:
We may damp down the fire furnace for the night.
我们可以把火炉子封上过夜。
Analysis and Administration of Fire-damp Gush into Small Coal Column Combined Mining Top Blasting Face
小煤柱综采放顶煤工作面瓦期涌出分析及治理
You'd better damp ( down ) the fire before leaving.
你最好在离开以前用灰把火封上.