适用：数据均匀分布，如[0,1)之间的浮点数
阿爸第一次回那边认祖，还是十岁那年。当时，他的亲姐姐出嫁，家里人托人带话，让他回去。他记不清那天都有谁在场，也记不清屋子长什么样。只记得婚礼上的糖果很甜。他说那天分到好几颗，舍不得一次吃完，揣在口袋里，回来慢慢吃。。关于这个话题，Line官方版本下载提供了深入分析
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time.sleep(2 ** attempt) # 指数退避
When they began walking again, they had a "bizarre" interaction with a man who thought they were lost as they were wearing coastal banners while walking in land-locked Shropshire.，这一点在搜狗输入法2026中也有详细论述