unsaturated solution

例句：

1. 1. The soil is unsaturated with moisture.
   土壤中水分充足。
2. 2.The oil is unsaturated and has a high flash point.
   这种油是不饱和的，闪点较高。
3. 3.The food was unsaturated and delicious.
   食物是未饱和的，美味可口。