The manager rejected several frivolous expense claims submitted after the sales conference.

經理駁回了幾筆業務會議後提交的無謂費用報銷申請。

Our customer service team must respond politely, even to frivolous complaints about packaging colors.

即使是抱怨包裝顏色這種無關緊要的客訴，我們客服團隊也必須禮貌回應。

During the budget meeting, the CFO warned staff against frivolous spending on office decorations.

在預算會議上，財務長警告員工不要把錢浪費在辦公室裝飾這類無謂的開銷上。