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summation of [noun]
The summation of the individual costs gives the total.
各项成本的总和得出总数。
求和；总和；合计
先理解核心含义，再看它在真实句子里的用法。
求和；总和；合计
the arithmetic operation of adding numbers; calculating the sum of two or more numbers
The summation of the individual costs gives the total.
各项成本的总和得出总数。
数学用语
总结；摘要；概括。
Summarization; summary; summing up.
求和；总计；一系列项目的相加。
Summing; summing up; adding (adding up) of a series of items.
The summation of these numbers gives us the total cost.
这些数字的总和给出了总成本。
Please check your summation before submitting the report.
提交报告前请核对你的合计。
In mathematics class, we practiced summation using a simple formula.
数学课上，我们用简单的公式练习求和。
The summation of the individual costs gives the total.
各项成本的总和得出总数。
固定短语，用于总结陈述。
In summation, the evidence supports the defendant's claim.
总之，证据支持被告的主张。
常用于法律语境。
The attorney delivered a powerful summation to the jury.
律师向陪审团做了强有力的总结陈词。
Not this
The lawyer summation the case.
Use this
The lawyer gave a summation of the case.
将名词'summation'误用作动词。正确的表达应使用动词'give'或'make'搭配名词'summation'。
Not this
There are two summation in the problem.
Use this
There are two summations in the problem.
忽略可数名词'summation'的复数形式，应加-s变为'summations'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
求和记号；求和表示法
The teacher introduced the summation notation for adding a list of numbers.
老师介绍了用于累加一串数字的求和记号。
求和公式
The summation formula works for any arithmetic sequence.
这个求和公式适用于任何等差数列。
级数求和
The summation of a series can be finite or infinite.
级数求和的结果可以是有限的，也可以是无限的。
结案陈词；最后总结
The defense attorney's closing summation convinced the jury.
辩护律师的结案陈词说服了陪审团。
求和指标；求和下标
The summation index appears below the sigma symbol.
求和指标出现在Σ符号的下方。
Use summation naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
由sum（总和）加后缀-ation构成，summation就是“求和/总计”；在法庭上又指“结案陈词”。
语域：mixed 常见场景：mathematics and statistics、academic or formal writing、formal speeches 该词两个主要义项都偏正式：表示“总结/概括”时多用于正式书面语或演讲；表示“求和/总计”时是数学、统计等领域的专业术语。日常口语中较少使用，通常改用 summary 或 total；具体含义需根据语境判断是“概括”还是“相加”。
可数名词
Dictionary facts from ECDICT, WIKTIONARY.