spontaneousadj.自发的,自然的,本能的;自然产生的
spontaneous boycott自发抵制
spontaneous process自发过程
spontaneous version[医] 自动倒转
spontaneous nucleus自发核
spontaneous element自发要素
spontaneous routing自发路由
Spontaneous edentia自发性无牙
spontaneous fission自发裂变
spontaneous braking自然制动
spontaneous impulse自发冲动