这个社区的居民大多是中下阶层，他们从事技术工作但收入一般。

Most residents in this community are ___lower-middle-class, working technical jobs with modest incomes.

他的中下层阶级背景使他更喜欢看情景喜剧而不是高雅戏剧。

His ___lower-middle-class background made him prefer sitcoms over highbrow theater.