stationary independent increment

例句：

1. 1. The caris stationary in the middle of theroad.
   汽车停在路中间。
2. 2. Theweather has been stationaryfor the past few days.
   过去几天天气一直不变。
3. 3. Thecompany's policy onenvironmental protection is stationary.
   公司对环境保护的政策是固定的。