amount of the instrument

例句：

1. 1. The amount of the loan is $5000.
   贷款的金额是5000美元。
2. 2. Thecost of the goods is30% of theamount.
   货物的成本是金额的30%。
3. 3. The company's revenue increased by20% from last year's amount.
   公司的营收比去年增加了20%。