The manager found the intern's jejune complaints about the dress code hard to take seriously.

經理覺得實習生對服裝規定那些幼稚的抱怨很難當一回事。

Several board members dismissed the proposal as jejune and lacking any real financial analysis.

幾位董事認為這份提案太過幼稚，而且缺乏實際的財務分析。

The customer's jejune insults toward our staff were reported to the hotel's front desk manager.

那位顧客對我們員工幼稚的辱罵，已經回報給飯店櫃檯經理。