to ask again; to listen to or inquire a second time (e.g., to clarify or because you didn't hear)
アナウンスが聞き取れなかったので、駅員に聞き直した。
I couldn't catch the announcement, so I asked the station staff again.
説明が不明瞭だったので、担当者にもう一度聞き直した。
The explanation was unclear, so I asked the person in charge again.
電話で聞き取りにくいところは遠慮せずに聞き直していい。
If you can't hear something clearly on the phone, don't hesitate to ask again.
会議中に重要な発言はその場で聞き直した方が安心だ。
It's safer to ask again on the spot about important remarks during a meeting.