Then mailmen send the mails to the private mail boxes.

然后邮递员将邮件送至各自的邮箱。

The letters are not written clearly, so the mailmen cannot read the addresses.

这些信写的不清楚。所以送信人不能看懂地址。

Dear God: Are there mailmen in Heaven? If there are, will I have to apologize?

亲爱的上帝：天堂里有邮差吗？如果有的话，我得对他道歉吗？（美国的狗跟邮差是死敌）

You had better include that because it is easier for the mailmen to find the correct mailing place.

最好加上邮编，这样邮差容易找到正确的邮寄地址。