unsaturated gain

例句：

1. 1. The oil isunsaturated and can be used as alubricant.
   这种油是不饱和的，可以用作润滑油。
2. 2. Thesoil is unsaturated,which means it has a lotof water.
   土壤是未饱和的，这意味着它含有大量的水。
3. 3. Thefood was unsaturated,which made me feel full fora long time.
   食物是未饱和的，这让我感到饱腹感很长时间。