权势的英文：
ascendance
ascendency
influence
lordliness

参考例句：

Eastern Establishment
东部权势集团

To be close to influential powers
依附权势

An influential Congressman
有权势的众议院议员

The power to inspire dread.
唤起恐惧的权势

It is quite obvious that he has a lust for power.
很显然他渴求权势。

Cultivating the friendship of influential people
巴结有权势的人

It is quite obvious that he have a lust for power.
很显然他渴求权势。

He is avaricious of power.
他贪婪权势。

Ambit/5AmbIt;`AmbIt/n [sing]bounds,scope or extent(of power,authority,etc)
(权势等的)范围,界限,限度.

Loss of brilliance,fame,power,etc
光辉、声誉、权势等的丧失

ascendance是什么意思：
n. 优越;权势;主权

It is easier to descend than to ascend
下降容易上升难

Your planet is ascending.
你们的星球在上升着。

At first Athens was in the ascendant, then Sparta.
起初雅典占了优势，后来斯巴达居上。

ascendency是什么意思：
n. 优势,优越,权势

It is easier to descend than to ascend
下降容易上升难

Your planet is ascending.
你们的星球在上升着。

At first Athens was in the ascendant, then Sparta.
起初雅典占了优势，后来斯巴达居上。

influence是什么意思：
n. 影响，作用；影响力；有影响的人（或事物）
v. 影响，感化

(degree of)importance,seriousness or influence
重要性、严重性或影响力（的程度）

The influence of the school has begun to tell.
学校的影响已开始起作用了。

A baleful look,influence,presence
凶恶的样子、势力、态度.