random element

例句：

1. 1.The results were random, so we can't predict what will happen next.
   结果随机，所以我们无法预测接下来会发生什么。
2. 2. She decided to go to the beach on a whim, which was quite random.
   她心血来潮决定去海滩，这相当随机。
3. 3.The lottery numbers were chosen at random, and the winner didn't know who they were until they checked their tickets.
   彩票号码是随机选择的，直到他们检查彩票才知道谁是获奖者。