Knowledge of something private or secret shared between individuals, especially with the implication of approval or consent.
On validity of the unknown clause in Bills of Lading under English Law and American Law;
The quest by private firms for profits takes place under familiar conditions of constraints.
right to information [Patients' Charter]
"Private, guarded thoughts or opinions."
To acquaint(oneself)with knowledge of a subject.
Acts5:2 And put aside for himself some of the proceeds, his wife also being aware of it.
Are you familiar with the laws relating to trespass?
Considerable acquaintance with.
have a slight [an intimate] acquaintance with...
对…稍有 [十分] 知悉 [了解]
He denied any knowledge of their plans.
vouchsafe to him certain official secrets
Your acknowledgement will be appreciate.
To say or tell privately or secretly.
I know that he's been smuggling some of the deadliest viruses in the world into this country with your help.
我知道在你的帮助下 他走私来了些 世上最厉害的病毒
We have been told that under( in) no circumstances may we use the telephone in the office for personal affairs.
Unconsciously, he had imbibed all the principles of egoism.