coincidence

It was mere/pure/sheer coincidence that brought them together so far from Chicago.他们从芝加哥那么遥远的地方来相聚，纯粹是个巧合。

By coincidence, every man in the room was named Fred.巧得很，房间里的人都叫弗雷德。

Our meeting happened by coincidence. [=by chance]我们碰巧遇上了。

“I'm going to Boston this weekend.” “What a coincidence! I am too.”“我这个周末要去波士顿。”“真巧啊！我也要去。”

It was no coincidence that he quit his job at the bank a day after the robbery.抢劫案发生后的第二天他就辞去了银行的工作，这绝非偶然。

a series of strange coincidences一连串奇怪的巧合

By a fortunate/happy coincidence, we arrived at the theater at the same time.我们在同一时间到达剧院，真是个令人惊喜的巧合。

Scientists have no explanation for the coincidence of these phenomena.科学家无法解释这些现象为什么会同时发生。

There is a coincidence of interests between the companies. [=the companies share the same interests]两家公司有着共同的利益。