The yellowish powdery spores of certain club mosses, especially Lycopodium clavatum, used in fireworks and explosives and as a covering for pills.是什么意思_The yellowish powdery spores of certain club mosses, especially Lycopodium clavatum, used in fireworks and explosives and as a covering for pills.在线翻译_英语_读音_用法_例句