cost换一个字母能变成什么单词

变成: post

n. 岗位邮件标杆

vt. 张贴公布邮递布置

vi. 快速行进

Have you opened your post yet?

你拆开邮件了没有

He was reinstated in his post.

他重新回到了自己的岗位。

I went round to the post office.

我到邮局去了一趟。

There was a lot of post this morning.

今天上午邮件很多。

I'm just going down to the post office.

我正要到那边的邮局去。