coincidence
US /koʊˈɪn.sɪ.dəns/
UK /koʊˈɪn.sɪ.dəns/

1.
巧合, 偶然
a remarkable concurrence of events or circumstances without apparent causal connection
:
•
It was a strange coincidence that we both wore the same outfit.
我们俩穿了同样的衣服,真是个奇怪的巧合。
•
By sheer coincidence, I met my old friend at the airport.
纯属巧合,我在机场遇到了我的老朋友。