名词
中文翻译：奴隶接力
同义词：
['slave conveyor', 'slave belt', 'slave chain']
例句：
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1.The slave relay was a crucial component of the ancient transportation system.
奴隶接力是古代运输系统的关键组成部分。
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2. In the old days, slaves were often used as relay workers in the fields.
在旧时代，奴隶经常被用作田间的接力工人。
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3.The slave relay was a symbol of human slavery and oppression.
奴隶接力是一个象征人类奴役和压迫的标志。