1. alias /ˈeɪliəs/ 1. n. 化名；别名  2. adv. 又名

Inspector Javelin discovered the David Smith was not the mayor's real 

name but an alias for John Campbell, the ex-convict.

调查员贾夫林发现，戴维·史密斯不是市长的真名，而是有前科的约翰·坎贝尔

的化名。

John Campbell, alias David Smith, was arrested by Inspector Javelin.

约翰·坎贝尔，又名戴维·史密斯，被调查员贾夫林逮捕。 

2. enigma  /ɪ'nɪɡmə/ n. 难题；谜

I have read the first homework problem several times but can't 

understand it. Maybe you can help me with this enigma.

我把家庭作业的第一题看了许多遍，还是不懂。也许你可以帮我解决这个难题。 

3. lurk  /lɜ:k/ vi. 潜伏

General Braddock's troops, marching in columns, were easy targets for 

the Indians lurking behind trees.

布拉多克将军的军队排成纵队前进，容易成为埋伏在树后的印第安人的目标。

4. seclude  /sɪ'klu:d/ vt. 隔绝；躲藏

To find a quiet place to study, Bruce had to seclude himself in the 

attic.

布鲁斯不得不躲在阁楼上，才能安安静静地读书。

5. clandestine  /klænˈdestɪn/ adj. 秘密的

Before the Revolutionary War, an underground organization, known as the 

Sons of Liberty, used to hold clandestine meetings in Boston.

独立战争以前，一个名为“自由之子”的地下组织常在波士顿举行秘密会议。

6. latent  /ˈleitənt/ adj. 潜在的

A good education will help you discover and develop your latent 

talents.

好的教育能帮你发现并发展潜在的才能。

7. stealthy  /'stelθɪ/ adj. 隐密的

The burglar must have been very stealthy if he was able to get past the 

two watchmen without being noticed.

能逃过两个守夜人而不被发现，这小偷一定是非常隐密。