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最佳答案：因为加the在名词前 是特指特定的那个东西,而这里涉及到的云和蒸汽都是指广泛意义上的物质,是不带特指意义的,所以不加the.希望我的回答对你有所帮助!
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最佳答案：How does the steam become the rain
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最佳答案：你能再帮我飞上天一次吗?小水滴飞的越来越高.
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最佳答案：The water would turn into steam when is heated to 100 degree.
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最佳答案：Development and manufacture of WZY-25 Turbo Type Vapor Compressor
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最佳答案：水泵在不停地工作.有时候蒸汽指示灯和缺水指示灯一起工作Pumps are continually working .sometimes steam indica
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最佳答案：This work chosen theme and style unique new,for old machines period style,steam,
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最佳答案：The development history of the carIn 1705, Newcastle first invented can door doe
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最佳答案：Abstract:The loss of power plants in the soft drinks,according to the losses is
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最佳答案：Everyone,in the anicent Ming dynasty,when there were no electricity or steam to