1. unconcern /ˌʌnkənˈsə:n/

-- lack of concern, anxiety or interest; indifference

The audience is breathless with anxiety during the daring tightrope act, though the acrobats themselves performed with seeming unconcern for their own safety.

在大胆的走钢索表演中，观众都因担心而屏住气息，而那些走钢索的人则表现得毫不在意他们自己的安全。

 

 

2. undeceive /ˌʌndiˈsi:v/

-- free from deception or mistaken ideas; set straight

If you think I can get Mr. Black to hire you because he is my cousin, let me undeceive you. I have no influence with him.

如果你认为我能让布莱克先生雇用你是因为他是我表兄的话，让我老实告诉你，我说的话对他没有用。

 

 

3. unnerve /ʌnˈnɜ:v/

-- deprive of nerve or courage; cause to lose self-control; upset

The unsportsmanlike noises of the fans so unnerved our star player that he missed two foul shots in a row.

没运动风度的球迷发出的噪声使我们的明星球员失去镇定，结果接连两次罚球都没罚中。

 

 

4. unscramble /ʌnˈskræmbl/

-- do the opposite of scramble; restore to intelligible form

The previous secretary had mixed up the files so badly that it took my sister about a week to unscramble them.

先前的秘书把档案弄得如此混乱，我姐姐花了大约一个星期才把它们整理好。

 

 

5. unshackle /ˈʌnˈʃækl/

-- release from a shackle (anything that confines the legs or arms); set free from restraint

When mutinous sailors were put in irons in the olded days, nobody was allowed to unshackle them.

昔日当叛变的水手被戴上镣铐时，任何人都不许除去他们的枷锁。

 

 

6. unabridged /ˌʌnəˈbrɪdʒd/

-- not abridged; not made shorter; complete

Though an abridged dictionary is convenient to use, it contains far fewer definitions than an unabridged dictionary.

虽然一本缩略版的词典使用方便，但它所含词条的释义却比完整版的词典少得多。

 

 

7. unbiased /ʌnˈbaɪəst/

-- not biased; not prejudiced in favor of or against; fair

Don't ask the mother of a contestant to serve as a judge because it may be hard for her to remain unbiased.

别让选手的母亲当裁判，因为她很难保持公平。

 

 

8. unquenchable /ʌnˈkwentʃəbl/

-- not quenchable; not capable of being satisfied; inextinguishable

Many teenagers have an unquenchable thirst for adventure stories, they read one after another.

许多十几岁的青少年对冒险故事有一种难以抑制的渴望，他们一本接一本地读。

 

 

9. unwary /ˈʌnˈwɛəri/

-- not wary; not alert; heedless

An unwary pedestrian is much more likely to be strunk by a car than one who looks both ways and crosses with the light.

一个不小心的行人比一个过马路看两边并按红绿灯的指示行动的人更有可能被车撞倒。