如何使用 "sum" 造句

1. Councils and development agencies more than matched that sum .
议会和开发机构花的钱比这还多。
2. I sold clothes for 10 days to save that sum .
我卖了10天的衣服才攒出这些钱。
3. Private , government and foreign balances must sum to zero .
私人部门、政府和外汇收支差额的总和必须为零。
4. Such a combination could be more than the sum of its parts .
这样一种结合的作用,比它的各单个部分的总和还要大。
5. I am the sum of all my experiences , both good and bad .
我的人生是所有经历的总和,无论是成功的还是失败的。