“奴隶贩子”常见的英文表达是 “slave trader” ，也可用 “slave dealer” 。
例如：
The slave trader was eventually brought to justice.（那个奴隶贩子最终受到了法律的制裁。）
In the past, slave dealers made huge profits by trafficking in human beings.（过去，奴隶贩子通过贩卖人口攫取了巨额利润 。）