The average number of river frozen days has been reduced and the problems associated with ice have been minimized and limited to the reservoir area.
凌期平均封河日期推迟、平均开河日期提前、封冻天数缩短，冰情、冰害有所减轻且主要发生在库区；在一定程度上缓解了宁夏引黄灌区春灌缺水的局面。
He collected pristine samples of the meteorite just days after they fell on the frozen lake, and stored them in his freezer.
几天后，他收集了落在冰冻湖面的陨石的原始样本，并把它们储存在他的冰箱里。
Four days later, the sun was shining and the tight-packed frozen snow was crackling under every step.
四天后，阳光明媚，冻结得硬硬的雪在脚下噼啪作响。
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