The manager seemed oddly nonchalant about the missed shipping deadline this morning.

經理對今天早上錯過出貨期限的事，顯得出奇地漫不經心。

Despite the tough interview questions, the candidate stayed calm and answered in a nonchalant tone.

儘管面試問題很刁鑽，那位應徵者仍保持冷靜，以若無其事的語氣作答。

Customers complained that the agent sounded nonchalant when they reported the billing error.

顧客抱怨，他們回報帳單錯誤時，那位客服人員聽起來漫不經心。