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1.讲座
We`ll invent new kinds of machinery to mine underground for us and nobody can tell exactly how much coal there is underground. Atomic energy can`t take the place of coal because it`s too dangerous to produce. Once leakage occurs, it`ll bring disastrous r
我们可以制造新型机械来代替人工在地下采煤.并且.没有人确切地知道地下到底有多少煤.原子能无法取代煤炭.因为生产原子能太危险.一旦发生泄漏.将会有灾难性的后果.许多人反对发展原子能.
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