"unanticipated and disconcerting lines of development" "unforeseen circumstances" "a virtue unlooked-for in people so full of energy" "like a bolt out of the blue"
例句
用作形容词(adj.)
You were responsible for that accident.你应对那意外的事故负责。
The unexpected answer threw the lecturer out for a moment.意外的回答使演讲者愣一会儿。
