此时，北方士兵一个个都成了挖掘运河的专家了。
They did not work, either. By this time, the Union soldiers had become experts at digging canals.
他们采金，伐木，挖掘运河，或者铺铁路，多数都是在对自由劳工没有任何吸引力的荒芜地区。
They mined gold, felled timber, dug canals or lay rails, most often in harsh areas to which free labor could never be enticed.
他还预言“用于和平目的的核爆炸”定能产生经济效益，这也是很多美国核研究人员交口盛赞的，比如挖掘运河。
He also promised economic gain from "peaceful nuclear explosions," which many American nuclear researchers extolled for, say, digging canals.
应用推荐