您要查找的是不是：
- The thing was not known to be litigious when purchased. 那东西买来时大家都不知道它在法律上是有问题的。
- The market situation is not known to us. 我们还不了解市场情况。
- It's not known who gunned that man down. 不知道是谁开枪打伤那个人的。
- I do not know why acids eat in metals. 我不知道酸腐蚀金属的原因。
- He does not know what to do with his vacant time. 他不知道空闲时间该干点什么。
- The exact date of his birth is not known. 他确切的出生日期无人知道。
- They do not know what the words mean. 他们不知道这些字的意思是什么。
- I fear I do not know the answer to that. 我恐怕回答不出那个问题。
- We did not know how to soothe the bereaved mother. 我们不知如何安慰那位丧子的母亲。
- We do not know when this world came into being. 我们不知道世界是何时形成的。
- Such a young child does not know chalk from cheese. 这样年幼的孩子是不辨是非的。
- The old woman does not know from A to B. 这位老太太一字不识。
- What a yap he was, he did not know how to whisper. 他真是个粗汉,他不会小声地说话。
- He did not know her way of life. 他不知道她的生活方式。
- She does not know the gravity of her illness. 她不知道自己病情严重。
- Gee! I do not know this guy cry so much when he's drink. 哇啊！我不知道这老兄一喝酒，就会嚎啕大哭。
- Mary took his story at face value and do not know he was joking. 玛丽对他的陈述信以为真，却不知道他是在开玩笑。
- Cotton material was not known in Europe until much later. 直到很晚之后，欧洲才知道棉花布料。
- He do not know the true story, so he draw on his imagination. 他不知道事情的真相，于是乎就凭空捏造了。
- She does not know London very well, and she lost her way. 她不太熟悉伦敦，所以她迷了路。
