(pathology) an elevation of the skin filled with serous fluid
同义词:blister, bleb
the round leaden seal affixed to a papal bull
bulla详细解释
bul.la n.(名词)【复数】bul.lae[bôl.ô] A round seal affixed to a papal bull.印玺:一个圆形的教皇的正式宣布训令或法令的封印Pathology A large blister or vesicle.【病理学】 大水疱或水泡 来源:Medieval Latin 中世纪拉丁语 from Latin [bubble, seal] 源自 拉丁语 [水泡,蜡封]