名词
中文翻译：Unknown
同义词：
['underclass', 'working class', 'lower stratum', 'subclass']
例句：
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1. The government is trying to improve the living conditions of the lower class.
政府正试图改善下层阶级的生活条件。
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2.The lower class often faces discrimination and lack of opportunities.
下层阶级经常面临歧视和缺乏机会。
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3.The lower class has been neglected in terms of social welfare.
在社会福利方面，下层阶级一直被忽视。