1·He had sought to obtain payment of a sum which he had claimed was owed to him.
他曾试图获得一笔他声称是欠他的钱。
—— 《柯林斯英汉双解大词典》
2·He did her out of a sum of money.
他骗了她一笔钱。
3·It is important to remember that success is a sum of small efforts made each day and often takes years of achieve.
重要的是要记住，成功是每天所做出的努力的总和，往往需要多年才能实现。
4·One is randomly chosen to propose how a sum of money, known to both, should be shared between them; only one offer, which must be accepted or rejected without negotiation, is allowed.
其中一人被随机挑选出来，提出双方都知道的一笔钱应该如何分配；只允许有一个报价，必须被接受或拒绝，没有谈判。
5·You owe a certain person a sum of money.
你欠着某人一笔钱。
—— 《柯林斯英汉双解大词典》
6·In those days, $20 was not a sum to be sniffed at.
那时候，20元不能不当回事。
—— 《牛津词典》
7·In those days, $20 was not a sum to be sneezed at.
那时候，20元可不能不当回事。
—— 《牛津词典》
8·He is saving a sum of money to buy a home for his family.
他正在攒钱为家人买房子。
9·So vast a sum, all in actual cash, seemed next to incredible.
这么大一笔钱，全是现金，简直令人难以置信。
10·It is important to remember that success is a sum of small efforts made each day and often takes years to achieve.
成功是由每天一点一滴的努力汇集而成，通常需要多年的时间才能实现，记住这一点很重要。