名词
中文翻译：贱民
同义词：
['subordinate', 'inferior', 'lowly']
例句：
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1. The government has been accusedof persecuting the lower classes.
政府被指控迫害低阶层。
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2. He wasborn into a family of lower classes andstruggled to make ends meet.
他出生在一个低阶层家庭，努力谋生。
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3. Thelower classes have long been marginalized insociety.
低阶层长期以来在社会中被边缘化。