1、The abolition of slavery was a significant milestone in the quest for freedom and the end of enslavement.
废除奴隶制是争取自由和结束奴役的重要里程碑。
2、The history of oppression and enslavement serves as a stark reminder of the atrocities committed in the past.
奴役和压迫的历史提醒我们过去发生的暴行。