A strong-smelling gum resin from the stems of a plant(Dorema ammoniacum) of western Asia, formerly used in perfumery and in medicine as an expectorant and a stimulant.是什么意思_A strong-smelling gum resin from the stems of a plant(Dorema ammoniacum) of western Asia, formerly used in perfumery and in medicine as an expectorant and a stimulant.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句