random vibration

例句：

1. 1.The random selection of the winners is a surprise to everyone.
   随机选择获奖者让每个人都感到惊讶。
2. 2. He decided to take a random route home from work.
   他决定下班后随机走一条回家的路。
3. 3. The random act of kindness has inspired many others to do the same.
   这个随机的善举激励了许多人也去做同样的事情。