Could you spell your last name for me so I can update your account?

可以請您拼一下您的姓氏，讓我更新您的帳戶資料嗎？

The receptionist asked the visitor to spell the company name for the security badge.

櫃檯人員請訪客拼出公司名稱，以便製作安全識別證。

When booking the flight, please spell each passenger's name exactly as it appears on the passport.

預訂機票時，請依照護照上的寫法正確拼出每位乘客的姓名。