airheaded

He made an airheaded remark during the meeting, and everyone laughed at him.

他在会议上说了一句轻浮的话，大家都笑他。

She is too airheaded to handle this serious responsibility.

她太轻浮了，无法承担这项严肃的责任。

Stop asking such airheaded questions and focus on the real problem.

别再问这么傻的问题了，专注于真正的问题。