请填写收信人和寄信人的姓名。

Please fill in the names of the addressor and the addressee.

称呼和署名要对应，明确自己和收信人的关系。

And signed the corresponding call to clear himself and the addressee .

发信人与收信人的公钥都保存在公开的地方，公钥的权威性则可以由第三方进行签名认证。

The fair key of sender and addressee saves the place that making public, the authority of fair key can undertake autograph attestation by tripartite.

在正式信件中，当你知道收信人的名字时，你会以“此致敬礼”结尾。

In a formal letter, when you know the name of the person you are writing to, you would sign off ‘Yours sincerely'.

这封信带有恐吓的语气，吓到了收信人。

The letter had an intimidatory tone that frightened the recipient.

他画情书和情书收信人；

He paints love letters and their recipients.

注意要把收信人的地址写清楚.

Be sure to put down the address of the receiver clearly.

这封信的收信人三年前就去世了。

The person to whom this letter is addressed died three years ago.

收信人的地址要写在信封的中央。

The receiver's address goes toward the center.

应该小心措词使收信人有思想准备，

But be cautious of terms that prepare the receiver