Spraying water on storage pools full of overheating spent uranium fuel rods is not very effective because rising steam dissipates much of the incoming water.

向装有过热铀燃料棒的储存池里撒水效率不高，上升的蒸汽驱散了大量水分。

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James Watt spent 20 years laboring to perfect his steam engine.

詹姆斯·瓦特用了二十年工夫来改善他发明的蒸汽引擎。

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