辞职信的英文：
resignation letter

参考例句：

Tender a letter of resignation.
正式提交辞职信

He drafted (out) his letter of resignation.
他起草了辞职信。

resignation是什么意思：
n. 辞职；辞呈；听从，顺从

He resigns to his fate.
他听天由命。

He was forced into resigning.
他被迫辞职。

They resigned their cat to the care of their neighbour.
他们把猫托付给邻居照管。

Her look was skeptical and resigned.
她的表情是将信将疑而又无可奈何。

He is said to have considered resigning.
据说当时他曾经考虑过辞职。

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。