She was unaware that I could see her.
她没想到我能看见她。
I was unaware of his existence until today.
直到今天我才知道有他这么个人。
He was completely unaware of the whole affair.
他对整件事情一无所知。
They were unaware of the fate that was to befall them.
他们并不知道即将降临到他们头上的厄运。
She hadn't read the letter and so was unaware of its contents.
她没有看过那封信，所以对其内容一无所知。