关于GeorgeStephensonwasb的百科

• 任务型阅读。GeorgeStephensonwasbornin1781inapoorfamily.Hehadt...

• 问题详情：任务型阅读。GeorgeStephensonwasbornin1781inapoorfamily.Hehadtostartworkwhenhewasonlyeight.Attheageoffourteen,hebecamehisfather’shelper.Ittookhimalotoftimelearningaboutengines(发动机).Andonholidaysheoftenmadeoneengineintopiecesandstudiedeachp...
• 2019-12-304098