表示偶然的英语短语

　　例句：

　　Several years after they'd split up they met again by chance in Paris.

　　他们分手几年以后在巴黎又偶然相遇。

　　She discovered the problem by accident during a visit to a nearby school.

　　她在去附近一所学校参观时偶然发现了这个问题。

　　As luck would have it, he had just left when I arrived.

　　我到那儿，不巧他刚走。

　　As it happens, I have a spare set of keys in my office.

　　碰巧我在办公室有一套备用钥匙。