我在图书馆与一位老朋友不期而遇。

I ran across an old friend of mine in the library.

《新英汉大辞典》

因为路上与一位老朋友不期而遇，结果到他办公室的时候晚了。

An accidental meeting with an old friend on the way delayed my visit to his office.

youdao

因为路上与一位老朋友不期而遇，结果到他办公室的时候晚了。

An accidental meeting with an old friend on the way delayed my visit to his office.

youdao