Hydraulic fill dam is a fast and economic method for dam building, but the construction of filling is confined by seasons owing to long freezing period of cold zone at high latitude.

水坠筑坝是我国创造的一种快速、经济筑坝方法，但高寒地区冰冻期长，冲填施工受到季节限制。

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Orton suspects that changes in global wind patterns have brought ammonia-rich material into the clear, cold zone above the SEB, setting the stage for formation of the high-altitude, icy clouds.

奥尔顿怀疑是木星全球风的模式改变将富含氨的物质带到了SEB之上的清澈而寒冷的区域，为在高空形成冰云打下了基础。

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