The manager's blithe dismissal of the budget warnings worried the entire finance team.

經理對預算警訊漫不經心地置之不理，讓整個財務團隊憂心忡忡。

Customers complained about the agent's blithe response to their missing shipment.

顧客抱怨客服人員對他們遺失的貨件回應得漫不經心。

She blithely ignored the hotel's checkout time and was charged for an extra night.

她漫不經心地忽略了飯店的退房時間，結果被多收了一晚的費用。