sum

[sʌm]

n.金额, 总数, 要点
v.概括, 总结, 归纳, 总计

例句与用法：

Is that the sum of what you've done in the last two years?

这就是你最近两年中完成的全部数量吗？

The last section sums up all the arguments on either side.

最后一部分总结了双方的全部论点。

The sum of 5 and 3 is 8.

五加三的总和是八。

I had to spend a large sum of money to get it back.

我得花一大笔钱才把它弄回来。

词形变化：

动词过去式: summed | 动词过去分词: summed | 动词现在分词: summing | 动词第三人称单数: sums |

详细释义：

n.[C]

1. 总数, 总和, 总计[the S][(+of)]

She paid the sum of $200 for dresses.

她买衣服总共花了二百元钱。

2. 【数】和[the S][(+of)]

3. 金额; 一笔[(+of)]

He earned a large sum of money.

他赚了一大笔钱。

4. 概要; 要点[the S][(+of)]

5. 算术题; 运算

The boy is good at doing a sum in his head.

这男孩擅长心算。

6. 顶点, 极度[the S][(+of)]

vt.

1. 计算……的总和[(+up)]

2. 总结; 概括; 概述[(+up)]

The story may be summed up in one sentence.

该故事可以用一句话来概括。

vi.

共计[(+to/into)]

短语词组：

in sum

1. 简言之

My meaning, in sum, is that you must stay.

简单地说, 我的意思就是你必须留下来。

sum up

1. 计算

We have to sum up the costs of production.

我们得计算一下生产成本。

2. 总结

Let's sum up our experience before going on.

在继续做之前我们先来总结一下经验吧。