We would appreciate your understanding and ask you to accept

our apologies.

We wish to apologize once again for the delay in delivery.

（對於此次的延期交貨我們再次向您表示道歉。）

Please accept our apologies for the trouble caused.

（對於給您造成的不便，請接受我們的道歉。）

We would like to apologise for the delay in answering your letter.

（耽誤了給您的回信，對此我們向您道歉。）

You should be able to confirm the receipt of the funds in your

account tomorrow, your time. Please accept our sincere

apologies for the delay.

（貴方應在明天收到匯款，請接受我們真誠的道歉。）

以上範例摘自《英語國際溝通工具》