公费的英文：
at public expense

参考例句：

The public spending cuts will mean the chop for several hospitals.
削减公费开支意味着要砍掉几所医院.

Does this item of expenditure belong under the head of office expenses?
此项开支是否该列在办公费项下?

One who goes on a junket or junkets.
郊游者，(公费)旅游者前往郊游或作公费旅游的人

public是什么意思：
adj. 公众的；公共的，公用的；政府的；公然的，众所周知的
n. 公众，民众；大众，群众

public administrator
公定遗产管理人

Public law includes laws that affect the public generally.
公法一般包括影响公众的法律。

The press will give publicity to the fact.
出版社将把事实真相公诸于世。

To bring to public notice;disclose.
使显露引起大众的注意；使显现

This information should be in the public domain.
这一消息应该为公众所知。

expense是什么意思：
n. 消费，开支；损失

duplicate expenses
使费用加倍

You will be reimburse for your expenses or your expenses will be reimburse.
你的花费将得到偿还。

All the expenses fall on me.
全部费用由我支付。

To enrich oneself at others expense
损人利己

It's handmade and hence expensive.
这是手工做的，因此很贵。