Quite unprompted, Sam started telling us exactly what had happened that night.
萨姆完全出于主动，开始把那天夜里发生的事一一向我们说了出来。
《牛津词典》
2
But such gloomy views are seldom offered unprompted.
然而，这样的悲观情绪鲜有自发形成。
3
Such musings are not, of course, unprompted. This year, Amsterdam is celebrating the 400th anniversary of Rembrandt's birth, and it is hard to escape his shadow.