名词
中文翻译：奴隶制
同义词：
['bondage', 'serfdom']
例句：
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1. The institutionof slavery is abolished inmany countries today.
如今，许多国家废除了奴隶制。
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2. The slave trade wasa major cause of human suffering throughout history.
奴隶贸易是历史上人类苦难的主要原因之一。
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3.Slavery has been a topic ofdebate and discussion for centuries.
奴隶制是几个世纪以来的争论和讨论的主题。