名词
中文翻译：奴隶
同义词：
['servant', 'indentured servant', 'bonded servant']
例句：
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1. The slave trade was abolished in the 19th century.
在19世纪，奴隶贸易被废除。
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2. He was a slave to his addiction.
他沉迷于他的瘾。
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3. The slaves were treated with cruelty and oppression.
奴隶们遭受了残酷的压迫和剥削。