您要查找的是不是：
- He was an unknown painter one year ago. 一年前，他还是一个不为人知的画家。
- We use x as the symbol for an unknown quantity. 我们用x表示一个未知数。
- It is no safe wading in an unknown water. 不知水深浅，涉水不安全。
- He was an unknown novelist then. 当时他是位不出名的小说家。
- The painting was ascribed to an unknown artist. 那幅画被认定系一不出名的画家所作。
- We bought a drawing by an unknown artist. 我们买了一幅某个不出名的画家所作的画。
- The managers want to pit the champion against an unknown. 经理们想让冠军与一名未成名的选手比赛。
- The new sales director is still a bit of an unknown quantity. 新来的销售部主任大家还不大了解。
- An unknown or unnamed factor, thing, or person. 未知之(人)物，不知道的或未命名的因素、物体或人
- Life can be liken to a journey with an unknown destination. 人生就好比一场不知终点的旅行。
- The famous tennis player went down to an unknown young woman. 著名的网球运动员败在一个不知名的年轻女运动员手下。
- The new teacher is still very much an unknown quantity but we have hopes that he will be a valuable member of our team. 新教师是谁现在还难以预料，但我们希望他会成为我们队里的重要一员。
- an unknown antityn. 未知量(难以预测的人)
- The football game was won by a sleeper, an unknown new player. 足球比赛爆冷门，有一匹黑马赢球了，是一个名不见经传的新球员。
- The author had been an unknown until he published his recent book. 这位作家一直是个默默无闻的人，直到最近出版了他的一本书。
- Life can be likened to a journey with an unknown destination. 生命可以被比作一次不知目的地的旅行。
- All the acts were good but an unknown young comedian stole the show. 所有的演出节目都很精彩，但一个不知名的小丑的表演更是出足了风头。
- You must eliminate an unknown quantity. 你必须消去一个未知数。
- Received flowers from an unknown admirer. 从一个不知其名的敬慕者那儿收到鲜花
- It was written by an unknown author. 这书是一位无名作者写的。
