Study hard kids, your mother and I want you to get into a good college when the time comes.
努力学习,孩子们,你们的妈妈和我希望你们能考上名校。
It's about a time when there were black slaves in North America. It's about their fight for freedom.
(它)讲的是有一段时期,北美洲存在黑奴。影片讲述他们为自由而斗争的情况。