apropos of something formal ABOUTused to introduce a new subject that is related to something just mentioned 说到某事,关于某事,就某事而言〔用于引入与刚才话题有关的新话题〕 He had nothing to say apropos of the latest developments. 至于最新的进展,他没有什么要说的。
apropos of nothing (=not relating to anything previously mentioned) 突然地,无缘无故地〔改变话题〕 Apropos of nothing, he suddenly asked me if I liked cats! 他突然没头没脑地问我是否喜欢猫!
apropos of nothing• Douglas paused and then, apropos of nothing , announced, "We could have been in New York by now."
→ apropos of something at apropos(1)