a good sum

• 可观的金额

a good sum的用法和样例：

例句

1. I save a nice little sum out of my wages each week.
   我从每周的工资中节省一笔可观的金额。
2. He donated no small sum of money to the orphanage.
   他给那家孤儿院捐赠了不少的金额。