animal oil and fat

例句：

1. 1. The animal oil is used to lubricate machinery.
   这种动物油被用来润滑机械。
2. 2. The farmer uses animal fat tomake soap.
   农民用动物脂肪来制作肥皂。
3. 3. The animal oil and fat are bothsources of energy for the body.
   动物油和脂肪都是人体的能量来源。