The clerk accidentally transposed two digits, so the invoice showed 4,590 instead of 4,950.

職員不小心把兩個數字的位置對調了，所以發票上顯示 4,590 而不是 4,950。

Please check the account number carefully; customers often transpose the last two numbers.

請仔細核對帳號；客戶常常把最後兩個數字弄反。

In the revised itinerary, we transposed the Tokyo and Osaka visits without changing the total cost.

在修改後的行程中，我們把東京和大阪的行程順序互換，總費用不變。