敬启者：
第3241号账单
鉴于贵方总是及时结清款项，而此次逾期一个月仍未收到贵方上述账目的 欠款，我们想知道是否有何特殊原因。
我们猜想贵方可能未及时收到我们六月九日发出的一万美元欠款的账单。 现再寄出一份，并希望贵方及早处理。
期盼早复。
你真诚的
Smith
Dear Sir,
Account
As you are usually very prompt in settling your accounts, we wonder whether there is any special reason that we have not received the payment of the above account already one month overdue.
We think you may not have received the statement of account we sent you on June 9 showing the balance of US$10, 000 you owe. We send you a copy and hope it may have your early attention.
We hope your early reply.
Yours faithfully.
Smith