unsaturated coefficient

例句：

1. 1.The soil is unsaturated with moisture.
   土壤中水分不足。
2. 2. The oil is unsaturated and has a high viscosity.
   这种油是不饱和的，粘度很高。
3. 3.The chemical reaction is unsaturated, meaning it doesn't reach equilibrium.
   化学反应是未饱和的，意味着它没有达到平衡状态。