Please obtain written authorization from your manager before booking any international travel.

預訂任何國際差旅之前，請先取得主管的書面授權。

The bank requires your authorization before transferring funds to an overseas account.

銀行在將資金轉入海外帳戶前，需要您的授權。

Customer service cannot issue a refund without prior authorization from the billing department.

沒有帳務部門的事先授權，客服無法辦理退款。