166. 다음 문장을 해석하시오.
Another generation passed before inventors succeeded in combining these ingredients, by putting the engine on wheels and the wheels on the rails, so as to provide a machine to take the place of the horse. Thus the railroad age sprang from what had already happened in the eighteenth century.
정답 확인 | 맞췄어요 O | 틀렸어요 X |