random logic device

例句：

1. 1. The results were randomand unpredictable.
   结果随机且不可预测。
2. 2. He decided to go to the beachat random.
   他决定随意去海滩。
3. 3. Theteam's performance was random, withno clear pattern.
   团队的表现是随机的，没有明显模式。