a large sum
我不仅把本钱全收了回来，还赚了一大笔。
I not only got all my money back, but also made a huge profit.
而那些磨坊能让她赚上一大笔。
And those mills could make her a fortune.
她欠了一大笔呢
She owes a lot of money.
— 风吹麦浪 (2006)
准确地说，这笔钱足以让我们三个人都赚上一大笔。
To be precise, this money is enough for all three of us to make a fortune.
有一大笔票据很快就要到期了。
A large number of bills are coming due soon.
他留给他女儿一大笔财产。
He left his daughter a large inheritance.