火山的爆发是自发的.The eruption of a volcano is spontaneous.我觉得他的热情有点勉强,缺乏自发的冲动.His enthusiasm was somewhat lacking in spontaneity, I thought.克诺普曼博士说: “ 舆论的改变不会是自发的,有人在那里操纵. ”Dr Knopfmann said, " A shift in public opinion doesn&#...

“自发的”的英语可以翻译为：initiative，spontaneous，[医] essential，idiopathetic，unmeditated ...