Lacking experience in digging canals, they learned it through practical work.
缺乏修渠的经验就在实践中慢慢摸索。
They did not work, either. By this time, the Union soldiers had become experts at digging canals.
此时，北方士兵一个个都成了挖掘运河的专家了。
He also promised economic gain from "peaceful nuclear explosions," which many American nuclear researchers extolled for, say, digging canals.
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.
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。
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