amount of water an animal's body

例句：

1. 1.The amount of water required for the experiment is 5 liters.
   实验所需的水量为5升。
2. 2. The company's annual revenue has increased by an amount of 30%.
   公司的年收入增加了30%。
3. 3.The amount of money he spent on clothes was more than I expected.
   他花在衣服上的钱比我预期的要多。