The first overload for the Random class eXPects no parameters and uses a time dependent Seed value.
第一个随机类实列没有任何参数，使用时间作为默认参数。
Wheat pre-harvest sprouting is a worldwide climate disaster. It effected wheat yield, quality and its seed value severely.
小麦穗发芽是一种世界性的气候灾害，它严重影响小麦的产量、品质和种用价值。
Pre-harvest sprouting of wheat not only results in decreasing of grain yield but also affects flour quality and seed value next year and so on.
小麦收获前穗发芽不仅影响产量，而且严重影响加工品质、粮食存储及下年的播种质量，造成不同程度的经济损失。
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