提示：点击例句中的单词，就可以看到词义解释

American evangelicals spearheaded the drive to end slavery .

美国的福音派信徒是结束奴隶制的先锋军。

Did the columbian exchange cause chattel slavery in the americas ?

哥伦布大交换导致传统奴隶制度在美洲盛行？

I want shine a light on slavery .

我要让光照到被奴役者。

John brown was ready for his final struggle against slavery .

约翰.布朗已经做好向奴隶制发起最后斗争的准备。

He trembled for his country when he contemplated slavery 's injustice .

他每次深思奴隶制的不公正时都会为自己的祖国颤抖。