aliphatic fraction

例句：

1. 1.The food was very fatty and rich in fats.
   这食物非常油腻，富含脂肪。
2. 2. The oil is alcoholic and has a high viscosity.
   这种油是酒精性的，粘度很高。
3. 3.The cake was greasy and hard to eat.
   这个蛋糕很油腻，很难吃。