英文摘要精简到 250 词：315 词与 173 词完整对照

精简一篇报告研究结果的英文摘要，要留下足以说明研究问题、方法、主要结果和局限的信息。下面的示例从 315 词缩到 173 词。对照表会指出每项研究信息保留在什么位置，方便你把词数和内容放在一起检查。

本文把 250 个英文词设为示例上限，不把它当成所有期刊的统一要求。北卡罗来纳大学写作中心的摘要指南区分描述式与信息式摘要，并提醒作者查看出版者或教师的要求。本文针对报告已完成研究的信息式摘要。借用示例结构前，先确认你的投稿或作业要求有哪些小标题、需要交代哪些内容。

教学示例：以下两版摘要及其中全部研究细节均为本次编辑演示虚构，不是真实研究成果，也不是产品生成的输出。为便于复核词数，两版示例保留英文；词数只计算摘要段落，不包括标题和本说明。本文的 250 words 不等于 250 个汉字。

University libraries provide places where students can study outside their scheduled classes, but students do not necessarily experience all library spaces in the same way. Understanding how access to a quiet seat relates to students' satisfaction may help libraries decide which questions to investigate when planning their spaces. This study examined the association between finding a quiet seat and satisfaction with library study space among undergraduate students at one university. An online survey was sent to 360 undergraduates who had used the main library during the previous four weeks. Responses were collected during two weeks in March 2025, and 216 complete responses were included in the analysis. The survey asked students how often they found a quiet seat and how satisfied they were with the study space. Satisfaction was measured on a scale from 1, very dissatisfied, to 5, very satisfied. Students were divided into two groups according to whether they reported usually finding a quiet seat or finding one less often. We compared the groups' mean satisfaction scores without adjusting for other student characteristics. Among the 216 respondents, 132 reported usually finding a quiet seat, while the remaining 84 reported finding one less often. Mean satisfaction was 4.1 in the first group and 3.2 in the second group, an unadjusted difference of 0.9 points on the five point scale. These results describe an association between reported seat availability and satisfaction among the students who responded to this survey. The study relied on students' recollections rather than observations of seat availability. Participation was voluntary, and the respondents may not represent all library users. Because the survey was cross sectional and conducted at one university, it cannot establish that quiet seat availability caused higher satisfaction or that the same pattern applies elsewhere. The findings support further investigation of quiet seating needs through direct observation and a broader survey before decisions are made about changing library space.

This study examined the association between finding a quiet seat and satisfaction with library study space among undergraduates at one university. An online survey invited 360 students who had used the main library in the previous four weeks. Data were collected over two weeks in March 2025; 216 complete responses were analyzed. Students reported how often they found a quiet seat and rated satisfaction from 1 (very dissatisfied) to 5 (very satisfied). We compared mean satisfaction without adjustment for other student characteristics. Of the respondents, 132 usually found a quiet seat and 84 found one less often. Mean satisfaction was 4.1 and 3.2, respectively, an unadjusted difference of 0.9 points. Finding a quiet seat was associated with higher reported satisfaction in this sample. The survey relied on recall rather than observed seat availability, and voluntary respondents may not represent all library users. Its cross sectional design and single university setting prevent causal conclusions and limit generalization. Direct observation and a broader survey are needed to investigate quiet seating needs before changing library space.

这次删去了 142 词，距离示例上限还有 77 词，不必为了凑满而补写。如果投稿要求还需要某项细节，可以用这部分空间补上真实研究中的相应内容，然后重新计数。

把表格和两版摘要一起读。判断一处缩写是否合适，要看读者能否直接读出相关细节，不需要自行猜补。样本和分析方法分开核对：受访人数没变，不代表作者如何处理这些回答也交代清楚了。

原版开头的两句背景被删掉了。它们解释图书馆空间为什么值得关注，而保留下来的首句已直接点出研究问题和场景。另一个被删掉的部分是单独介绍分组的句子；现在结果句把每组的定义和人数写在一起。这些地方省掉的是介绍同一信息的额外文字。

如果写成“安静座位使满意度提高了 0.9 分”，就夸大了这份虚构结果。原比较来自观察性调查，也没有调整其他特征。因此，精简版仍用 associated with（与……相关），把 0.9 分写成两组均值之差，没有把它解释成改造图书馆会带来的效果。

“一项对 360 名学生的调查发现……”在这里同样容易误导。360 是邀请人数，216 才是完整回答的数量。删去 invited（受邀）会混淆这两个口径。如果招募人数和分析样本都与摘要有关，就应让读者分得清。

ICMJE 的稿件准备建议要求医学期刊摘要交代重要局限，避免夸大研究发现。它针对医学投稿，不是这份教育调查示例必须遵循的格式规定。但这里的编辑问题相通：数字一个都没动，句子声称的事情仍可能变了。

本文用空白字符划分词：遇到空格、制表符或换行就分开，分开后的每段文字算一词。把某一版完整摘要段落作为 text，用 Python 的 `len(text.split())` 即可复算。没有空格的连字符词在此口径下算一词。投稿系统可能采用其他规则，最后仍要查看系统显示的数量。

检查自己的摘要时，把表格内容换成你论文里的研究细节。逐项确认留下的结果与全文相符，规定必须出现的信息也已写入。如果删去一条会影响结果解释的局限才能达标，应回头重新编辑。只看总词数，判断不了这段摘要是否准确描述了研究。

使用自动精简时，把所填词数当作尽力靠近的目标，而非精确结果承诺。内容也是尽量保留，措辞和数字仍需自己校对。上面的虚构示例展示的是这种核对方法，不是产品效果测试。