私人电话的英文：
a private phone

参考例句：

In this way, he has begun his own private telephone service.
就这样，他办起了自己的私人“电话”业务。

Staff is not allowed to make personal call during office hour.
在上班时间，工作人员不准打私人电话。

private是什么意思：
adj. 私人的；不公开的；保密的；清静的；私营的
n. 士兵；列兵；私下，不公开

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。

regional conference on the private sector
私营部门问题区域会议

The project is funded by private enterprise.
这项工程是由私人企业提供资金的。

phone是什么意思：
n. 电话，耳机，听筒
v. 打电话

A SUNFLOWER is a sunflower. A mobile phone is a mobile phone.
大家都知道，向日葵和手机，一个是植物，一个是机器，二者是截然不同的。

Don't hog the phone.
别老霸占着电话。

That's a courtesy phone.
那是一个免费电话。

The reporters scrambled for the phones.
记者们争抢电话。

[Informal] a cellphone; a cellular phone
大哥大