spontaneousadj.自发的,自然的,本能的;自然产生的
spontaneous angina自发型心绞痛
spontaneous speech自然语言
spontaneous appeal自发的呼吁
spontaneous action自发行动; 自发行为
Spontaneous breach破裂出血
spontaneous emitter自发发射体
spontaneous request自发请求
spontaneous folding自动折叠
spontaneous writing自发性写作
spontaneous changes自发变迁