弱势群体的英文：
vulnerable groups
a disadvantaged minority

参考例句：

Disadvantaged groups
弱势群体

Special employment assistance should be given to members of disadvantaged groups.)
对弱势群体给予特殊的就业援助。

vulnerable是什么意思：
adj. 易受伤的，脆弱的；易受攻击的

It is vulnerable and endearing.
它是脆弱又可爱的。

He, as the incumbent, is vulnerable on this.
作为在职者，他在这个问题上易受攻击。

He has a position vulnerable to criticism.
他的地位易受攻击。

groups是什么意思：
n. 组；团体；集团
v. 使聚集；将…分类，把…分组

grouping of data
资料归类

They are a group of wakes.
他们是一群守夜的人。

This group could be subdivided into two small groups.
这个组可以分成两个小组。

disadvantaged是什么意思：
adj. 贫穷的，处于不利地位的

Every advantage has its disadvantage
有利必有弊

What are the advantages and disadvantages of competition?
竞争的优缺点是什么?

A disadvantage of the turbine is that it is not reversible.
涡轮机的一个缺点就是它不可以反转。