您要查找的是不是：
- Though I may not be the most current test pilot, either operational or developmental, I am a known quantity to both communities. 尽管我可能不是最前沿的试飞员，也不是最前沿的作战人员和研发人员，但我了解这两个圈子里的大量事情。
- A technique for determining the molecular weight of a solute by dissolving a known quantity of it in a solvent and recording the amount by which the freezing point of the solvent drops. 冰点测定一种确定某种溶质分子量的方法，将一定数量的该溶质溶于某一溶剂中并记录使该溶剂的凝固点下降时的数量
- Some stress components in a formation can be measured directly, and others can be derived from known quantities, but some must be estimated based on correlations. 地层的一些分应力可以直接测量，而且其它的可以从已知数推导，但是一些必须根据相互关系而估计。
- He professed to know nothing about the matter. 他声称对此事一无所知。
- When it comes to German, I know nothing. 谈到德语，我一窍不通。
- Nothing is known of the authorship of the book. 无人知道该书是何人所写。
- He was known to be a young man with lofty ideals. 人们都知道他是一个有抱负的青年。
- I take it you know what a stethoscope is. 我想你知道听诊器是个什么东西。
- The place is known for its handicraft products. 这地方因出手工艺品而出名。
- I know where the picturesque old-world village is. 我知道那个风景如画的古老村寨在哪儿。
- It's known as the most dangerous part of the city. 那地方都知道是市内最危险的地段。
- He's sometimes been known to sit there all day. 有时能见到他整天坐在那里。
- That iron is a good conductor is known to us all. 铁是良导体这是我们大家都知道的。
- People in this town know him as a lunatic. 这个镇上的人们称他为疯子。
- Now I know where to go when I feel homesick. 现在我知道想家的时候该去哪儿了。
- I know all the ins and outs of our school building. 我知道我们教学大楼的一切情况。
- And you come from North Dakota! I want to know. 原来你是北达科他州来的！真想不到！
- Mrs Brown is known as a social climber. 布朗太太是有名的趋炎附势的人。
- The oboist is well known for his improvisation. 这位双簧管吹奏者以即兴演奏而著名。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
