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Merriam-Webster's Advanced Learner's Dictionary

導出

sum

8 ENTRIES FOUND:

¹ sum /ˈsʌm/ noun

plural sums

¹ sum

/ˈsʌm/

noun

plural sums

Learner's definition of SUM

[count] : an amount of money金额；款项

They spent large/considerable sums (of money) repairing the house.他们花大笔钱修缮房子。
We donated a small sum (of money) to the charity.我们捐了一小笔钱给慈善机构。
The sellers were asking for a modest sum.卖家要价不高。
I paid the sum of $500.我付了500美元。

— see also lump sum

[count]

a : the result of adding two or more numbers together和；总计；总和

The sum of 5 and 7 is 12.*5加7的和是12。

b : a simple problem in mathematics简易数学题 — usually plural通常用复数

schoolchildren doing sums做简易数学题的学童。

[singular] : the whole amount of something总数；全部

Working odd summer jobs has been the sum of my experience so far. [=has been all the experience I've had so far]暑期打零工就是我至今为止的全部工作经历。

— see also sum total

in sum

: as a brief statement of the most important information in a piece of writing or speech总而言之；总之

In sum [=in summary], we need a better public health-care system.总之，我们需要一个更好的医疗保健体系。

: in a few words简言之

The movie was, in sum [=in short], entertaining as well as educational.简言之，这部电影既有娱乐性也有教育意义。

sum and substance

: the general or basic meaning of something said or written概要；要点

What is the sum and substance [=gist] of the argument?争议的要点是什么？

sum of its parts

◊ Something that is greater/better/more than the sum of its parts is better or more effective as a team, combination, etc., than you would expect it to be when you look at the different parts that form it.个体相加不如集体的力量大；部分相加不如整体

The team lacks standout players, but it has proved to be greater than the sum of its parts.这个球队缺乏优秀的选手，但是整体配合证明要胜过个体相加。

— see also zero-sum game

² sum /ˈsʌm/ verb

sums; summed; summing

² sum

/ˈsʌm/

verb

sums; summed; summing

Learner's definition of SUM

sum up

[phrasal verb]

sum up or sum up (something) or sum (something) up : to tell (information) again using fewer words : to give a summary of (statements, facts, etc.) : summarize总结；归纳

I would like to take a moment to sum up the facts that I presented earlier.我想用点时间归纳一下我前面说过的事实。
She sums up the main arguments of the essay in the final paragraph.她在最后一段总结了论文的主要论点。
The judge summed up the evidence in his speech to the jury.法官向陪审团概述了证据。
To sum up, we need a better public health-care system.总之，我们需要一个更好的医疗保健体系。

sum up (someone or something) or sum (someone or something) up

a : to describe or show the most important parts or qualities of (someone or something) in a brief or simple way概括（最重要的部分）

The article nicely sums up her career.文章很好地概括了她的生涯。
That picture sums him up perfectly. [=that picture perfectly shows what kind of person he is]那张照片完美地展现了他的个性。

b : to describe (someone or something) using few words（以简洁的词语）总结，总括，归纳

The solution to the landfill problem can be summed up in one word: recycling.解决垃圾填埋问题的办法可以归结为一个词：回收利用。
The word “lazy” sums him up pretty well.“懒”是对他的恰当总结。
“So, you don't want to go because you think it will be boring?” “That just about sums it up.”“这么说，你不想去是因为觉得无聊？”“大体上就是这么回事吧。”

— see also summing-up

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