请大家慷慨解囊^ ^Another generation passed before inventors succeed

请大家慷慨解囊^ ^
Another generation passed before inventors succeeded in combining these ingredients by putting the engine on wheels and wheels on the rails,so as to provide a machine to take place of the horse.以我的理解,句子大体意思是这样的：发明者们通过将这些因素混合的方法把引擎安装在用于在轨道上跑的轮子中,从而使引擎代替了马,标志着又一时代的到来.如果按上述我这么理解,句中“before”一词的意思并没有被翻译出来.