The rise in quarterly sales was adventitious, caused by a competitor's sudden factory closure.

本季銷售成長純屬偶然，是因為競爭對手的工廠突然關閉。

Our meeting with the investor at the airport lounge was purely adventitious but very productive.

我們在機場貴賓室與投資人的會面完全是巧合，但成果豐碩。

The shipping delay had an adventitious benefit: customers received the updated model instead.

運送延誤帶來一個意外的好處：顧客反而收到了更新款的機型。