During the video conference, the sound kept cutting out, so we switched to phone.

視訊會議期間聲音一直斷斷續續，所以我們改用電話。

Please check the sound system in the meeting room before the client presentation begins.

客戶簡報開始前，請先檢查會議室的音響系統。

The flight attendant apologized because the sound from the cabin speakers was too quiet.

空服員道歉，因為機艙喇叭傳出的聲音太小了。