precipitation clutter suppression

例句：

1. 1.The city is experiencing heavy rainfall today.
   今天这个城市正在经历大雨。
2. 2. Therain stopped the fire fromspreading.
   雨水阻止了火势蔓延。
3. 3. Precipitation is anatural process that occurs when water vapor inthe atmosphere condenses into liquid droplets.
   降水是一种自然过程，当大气中的水蒸气冷凝成水滴时发生。