代理委托书的英文：
letter of delegation

letter是什么意思：
n. 字母；信；字面意义；证书，许可证；文学
v. 用字母标明，写字母于；写印刷体字母；赢得校名缩写字母标志

in letter and in spirit
在字面意义和精神实质上|无论形式和实际

The letter was a forgery.
这封信是伪造的。

Post the letter through the slit in the letter box.
把这封信从信箱的投信口投进去。

Imprint a postmark on a letter =imprint a letter with a postmark
盖邮戳于信上

The letter is directed to him.
这封信是写给他的。

delegation是什么意思：
n. 代表团；授权；委托

Babbitt was an official delegate.
巴比特是一名正式代表。

They drafted him to serve as their delegate.
他们选派他作他们的代表。

He has delegated the task to a subordinate.
他已经把任务交给了下属。

The delegation will arrive on Monday morning.
代表团将于星期一上午到达。

The delegation is slated to arrive next week.
代表团预定下周抵达。