fortuity

By sheer fortuity, we booked seats beside each other. ▶

纯属巧合，我们订的座位竟然挨在一起。

Scientific breakthroughs sometimes involve fortuity, although careful observation remains essential for recognising the value of unexpected results.

科学突破有时涉及偶然因素，但要认识到意外结果的价值，细致观察仍然至关重要。