undersaturated condition

例句：

1. 1. The soil was undersaturated with water due to heavy rainfall.
   由于大雨，土壤水分过多。
2. 2. The food supply is undersaturated, leading to a shortage of essential nutrients.
   食物供应不足，导致必需营养素短缺。
3. 3.The population growth rate is undersaturated, indicating that the birth rate is higher than the death rate.
   人口增长率不饱和，表明出生率高于死亡率。