送信的英文：
to carry letters

参考例句：

I sent the letter by a messenger.
我差信差送信。

The duty of a postman is to deliver letters and parcels.
送信和邮包是邮递员份内的事。

The messenger boy jogged back to the office.
那个送信的男孩慢吞吞回到办公室。

She was watching for the postman.
她正留意着等邮差送信来。

The mailman's job, in all kinds of weather, is summed up in the phrase"Deliver the mail."
邮递员的工作,不论天气如何,概括地说来就是"送信"。

I explained to the tech support person that I couldn't get my email to send or receive.
我对技术员解释说，我没办法用邮箱送信或者接收信件了。

After being bitten twice, he lets us tie the dog, and otherwise just does not send letter for us.
他在被狗咬了两次之后，要我们把狗拴起来，不然就不给我们送信。

carry是什么意思：
v. 提；抱；携带；输送
n. 射程

carry an article
刊登一篇文章

To carry by barge.
用驳船运载

a device on an aircraft for carrying bombs.
飞机上用来装载炸弹的装置。

carry a road into the mountains
使路延伸至山地

Do you carry stationery?
你们有文具出售吗？

letters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。