私自的英文：
secretly
privately
without explicit approval

参考例句：

No reference books are to be taken out of the reading room without permission.
本阅览室的参考书不得私自带出。

The author discovered that the translator had foisted several passages into his book
作者发现译者在他的原著里私自加入了几段。

Some office workers constantly pilfer pencils from the stockroom
有些办事员常顺手牵羊，私自拿走贮藏室里的铅笔。

FangYi know DingChenMei to find the job, butyl nasal spray feel suspicious, who inquires the rise.
方仪晓得丁陈玫来找丁喷鼻的工作，感觉可疑，私自查询起来。

Before night they wanted to lynch him, but he was gone
还没到晚上他们就想私自干掉他，可是他已经跑了。

secretly是什么意思：
adv. 秘密地，背地里

They secretly entered into collusion with the northern warlords.
他们喑中和北洋军阀勾结起来。

She was playing with fire by secretly borrowing office funds.
她暗中挪用公款简直是玩火。

To act together secretly to achieve a fraudulent, illegal, or deceitful purpose; conspire.
共谋，串通秘密地聚集在一起行动以达到叛逆、不合法的或欺骗目的；阴谋策划。

privately是什么意思：
adv. 私有地；内心地；私立地；个体地；僻静地

It's the private sector, stupid!
是私人部门出了问题，傻瓜！

Ignorance is mere privation.
无知是一种纯粹的贫乏。

And death is the privation of all awareness.
死亡是对所有意识的剥夺。

without是什么意思：
prep. 没有；不，无；在…范围以外
adv. 在户外；没有或不显示某事物
n. 外部；外面

with or without milk,with or without sugar.
有人愿意在茶中加奶，有人却不愿意有人爱加糖，有人却不爱加糖。

without [with no]stint
无限制地,不吝惜地

"Without money, without tear"
没有钱,就没有忧虑