The machines will be made of the best materials and the stipulations of the contract be strictly observed.
机器将用最好的材料生产,合同的规定也将得以严格履行。
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。