They wanted new states to be free from slavery, so they would not have to compete with slave labor.

VOA: special.2009.04.30

He wanted to build institutions that would be used for the sole purpose of perfecting the slave into the perfect worker.

因而需要建立一些特殊机构,这些机构只用于一个目的,就是能够让奴隶变成完美的工人

耶鲁公开课 - 美国内战与重建课程节选

And when he goes picking in the cotton fields, he imagines that he could be a slave.

当他去采棉花的时候，他把自己想象成一个奴隶。

耶鲁公开课 - 1945年后的美国小说课程节选

Second,he could not be guilty of plotting a slave rebellion, because he had never incited slaves against their owners.

VOA: special.2009.07.02

That's in Exodus 21:26-27. Moreover, the slave is entitled to the Sabbath rest and all of the Sabbath legislation. And quite importantly, a fugitive slave cannot be returned to his master.

这是在《出埃及记》第21章26-27节的描述，另外，奴隶有权,享受安息日的休息和所有关于安息日的法规，十分，重要的一点是，逃亡的奴隶不能再被归还给他的主人。

耶鲁公开课 - 旧约导论课程节选

He said it would be best to let the people themselves decide if New Mexico would be a slave or free state.

VOA: special.2009.03.12

The slave might be your business manager, but all the slave could do is the paperwork.

就算他为你管理生意，也只能做做文书工作。

耶鲁公开课 - 新约课程节选

An escaped slave would be hidden during the day by a member of the organization.

VOA: special.2009.04.16

But he said someone had to make clear to anti-slavery Democrats that the union would be dissolved if the constitutional rights of slave owners were not honored.

VOA: special.2009.07.09

But there would be no further attempt to make it a slave state.

VOA: special.2009.05.21