原文:You didn't know this.您對此毫不知情。
【recognize, realize和know的區別】
recognize=know again:認識; 認出; 辨認
recognize an old acquaintance
認出一位老相識
recognize this new government
承認這個新政府
recognize sb. in the street
在街上與某人打招呼
refuse to recognize sb. any longer
不再理睬某人
recognize one's duty
認清自己的職責

realize=come to know:領悟,了解,認識到
realize on:變賣
He realized on the house.
他變賣了房子。

know:知道; 熟悉; 了解; 懂得
know sb. by sight
同某人只是面熟
know sb. at once
立刻認出某人
know right from wrong
分辨是非
know better days
過好日子

【日常用語】
Yeah, go on up, but just for a little bit.
上去吧,不過別待太久。

She can't tell them everything.
她也不能全說啊。