1.emphasize v.着重，强调(to place emphasis on)

联想记忆：em+phas(看作phrase用短语表达)+ize--用短语表达是为了强调--强调

例：The committees must develop incentive compensation policies to emphasize long-term performance.

派生词：emphasis(n.重点，强调)

2.empirical a.经验主义的,经验的（originating in or based on observation or experience）

联想记忆：empiri(看作empire帝国)+cal--参照帝国以前的经验--经验的

例：These models are constructed primarily from empirical observations.

3.emulate v.效仿(to imitate)；努力赶上或超越（to strive to equaIor exceI）

词根记忆：emul(竞争)+ate --种竞争的姿态一努力赶上或超越

例：Mexican Americans should emulate the strategies of Native American political leaders.,,I tried to emulate Mary's skill at playing the piano.

派生词：emulous(a．好胜的)

4.enact v.制定或通过（法令）(to make or pass (a decree))

词根记忆：en(使)+act（行动）--使（法律）行动一制定或通过（法令）

例：Several towns in Vorland enacted restaurant smoking restrictions five years ago.

同根词：interact(v.相互作用，互相影响)：transact(v.处理;执行)

5.enamel n.牙釉质(a hard calcareous substance that forms a thin layer capping the teeth)；搪瓷(a usually opaque vitreous composition applied by fusion to the surface of metal, glass, or pottery);v.彩饰(to beautify with a colorful surface)

例：Applying a new method for analyzing the chemistry of tooth enamel, scientists have examined molars of prehuman ancestors and determined that their diets were more varied than had been supposed.

6.encephalitis n.【医】脑炎(inflammation of the brain)

7.enclose v.围绕，包圈(to surround)

例：The enclosed seas are an important feature of the earth's surface.

8.encode v.译码，编码( to convert, usu.a message, into code)

词根记忆：en+code(电码，密码)--译码

例：In a certain coding scheme, each word is encoded by replacing each letter in the word with another letter.

9.encompass v.包含(to include)；围绕(to surround, to encircle)

词根记忆：en+compass(罗盘：范围)--进入范围--包含

例：The themes in her poetry are universal, encompassvng much of the human condition.

10.encounter v.偶然碰到，遭遇(to come upon or experience unexpectedly)；n.意外相见(a chance meeting)

词根记忆：en+counter(相反的)--从两个相反方面来一偶然碰到

例：Most meteor streams that the earth encounters are more than 2,000 years old.