black powder 短语 [军][化工] 黑火药 释义与例句 n. 1. A simple form of gunpowder, consisting of a mixture of saltpetre, charcoal, and sulfur. 不可数 词汇关系 名词 上位词 2 powder gunpowder 部分词 9 s charcoal sulfur sulphur potassium nitrate niter nitre saltpeter saltpetre