"a soldier manned the entrance post"
"a sentry station"
"this military post provides an important source of income for the town nearby"
"there is an officer's club on the post"
"he occupied a post in the treasury"
"he set a row of posts in the ground and strung barbwire between them"
"your mail is on the table"
"is there any post for me?"
"she was opening her post"
"a pair of posts marked the goal"
"the corner of the lot was indicated by a stake"
"the mail handles billions of items every day"
"he works for the United States mail service"
"in England they call mail `the post'"
"it came by the first post"
"if you hurry you'll catch the post"
"post a warning"
"I'll post the news on the bulletin board"
"The newspaper posted him in Timbuktu"
"stake out the path"
"post a sign"
"post a warning at the dump"
"send me your latest results"
"I'll mail you the paper when it's written"
"She was branded a loose woman"
I shall post the letter to him tomorrow.（英国英语）
I shall mail the letter to him tomorrow.（美国英语）
We will post/mail you the booklet early next week.
He has a large amount of mail to answer every day.
句中的mail不可改成post。
The mails arrived by rail.
The letter came by (the) post.
邮箱： 