随机性发生器

例句：

1. 1. Theoutcome of the experiment was completely random.
   实验的结果完全随机。
2. 2. He decided to take arandom walk around the park.
   他决定在公园里随意散步。
3. 3. The lottery draw isa form of randomness in gambling.
   彩票抽奖是一种赌博中的随机性形式。