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- The main research purpose in this thesis is to observe unknown phase liquid crystal materials by conoscope. 本篇论文的研究重点就是透过聚光干涉的观察方法，去观察未知的液晶材料。
- The leading role is played by a complete unknown. 演主角的是一个毫无名气的演员。
- The star of the film is a previously unknown actor. 这部电影里的明星以前是个默默无闻的演员。
- Its greater part is unknown to me. 它的大部分对我是未知的。
- He was an unknown painter one year ago. 一年前，他还是一个不为人知的画家。
- This is a fact hitherto unknown. 这是一个至今无人知道的事实。
- A quantity of unknown numerical value. 未知数数值不明的一个数量
- He was taken into hospital for observation. 他被送进医院观察。
- Kate is in bad with Lucy for some unknown reason. 因为某些不为人知的原因，凯特和露西关系不好。
- Careful observation convinced them that is was so. 仔细的观察使他们相信情况是这样的。
- 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。
- It's basically wrong to have observation taken off from hearsay. 以道听途说作为意见的根据是根本错误的。
- The investigation was tabled for reasons unknown. 不知何故调查延缓进行。
- The ownership of the house is still unknown. 这栋房子的所有权至今无人知道。
- The unknown number can be calculated from the data. 通过已知数可以算出未知数。
- Many unknown writers aspire to fame. 许多不知名的作家渴望成名。
- He is a man of little observation. 他是个观察力极差的人。
- They decided to put him under observation. 他们决定监视他。
- He was an unknown novelist then. 当时他是位不出名的小说家。
