random difference equation

例句：

1. 1.The random selection of the team members was based on their performance.
   队员的随机选择是基于他们的表现。
2. 2. The random walk is a model of diffusion that describes how particles move in space.
   随机漫步是描述粒子在空间中移动的扩散模型。
3. 3. The randomness in the weather forecast caused some confusion among the audience.
   天气预报中的随机性引起了观众的一些困惑。