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英语翻译1.Among the most powerful engines of modern economic gro

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英语翻译
1.Among the most powerful engines of modern economic growth have been technilogical changes that raise output relative to inputs.
2.In iron production,learning by doing and adapting remained the key source of labor and fuel savings in the late cononial period---learning to reduce the fuel input to minimal levels saved on labor needed to gather charcoal and work the forges.(特别是这一句,翻译,再分析一下结构)
3.Adding to the supply of privateers and pirates,some of the island were deliberately peopled with convicts.
再追加十分.那些在线翻译的请绕道,
1、在推动现代经济增长的多种因素中,能提高投入产出的技术变革效果最为显著.
2、在殖民末期的钢铁生产中,通过实践和调整来总结经验一直是节约人力和燃料的重要手段——将燃料投入降低到最低的经验,节省了采煤和炼钢的人力.(这句看翻译应该能看懂结构了吧)
3、为了补充私有武装船和海盗船的人手,特意在一些岛屿安排了一些囚犯.