1. 今天相逢也实属：咱们虽同在一个City, | 今天相逢也实属Fortuity, | 但这是俺最大的Felicity.

2. 偶然：fortuitous 偶然的 | fortuity 偶然 | fortunate 幸运的

3. 偶然,意外：concurrence 结合;赞同 | fortuity 偶然,意外 | mediator 调停人,中间人

noun

1. anything that happens suddenly or by chance without an apparent cause

    e.g. winning the lottery was a happy accident
           the pregnancy was a stroke of bad luck
           it was due to an accident or fortuity

    Synonym: accidentstrokechance event