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extrapolation from X to Y
The extrapolation from the sample data to the whole population should be done carefully.
从样本数据到总体的推断应谨慎进行。
推断；推测
extrapolations — plural of extrapolation
先理解核心含义，再看它在真实句子里的用法。
推断；推测
an inference about the future or an unknown situation based on known facts and observations
The extrapolation from the sample data to the whole population should be done carefully.
从样本数据到总体的推断应谨慎进行。
指根据已知事实对未知情况或未来进行推断
对已知数值范围之外某函数值的估计计算。
A calculation of an estimate of the value of some function outside the range of known values.
基于已知事实对假设情境的推断。
An inference about some hypothetical situation based on known facts.
插值的截然相反概念。
The diametric opposite of interpolation.
This forecast is only an extrapolation from last year's sales figures, so it may be wrong.
这个预测只是基于去年销售数字的推断，所以可能是错误的。
Any extrapolation from such a small sample is risky.
根据这么小的样本做任何推断都是有风险的。
We cannot rely on a simple extrapolation of current trends to predict the future.
我们不能依赖对当前趋势的简单外推来预测未来。
The extrapolation from the sample data to the whole population should be done carefully.
从样本数据到总体的推断应谨慎进行。
His forecast was based on an extrapolation of current trends.
他的预测基于对当前趋势的外推。
表示具体推测时通常用复数形式 extrapolations。
It is risky to make extrapolations about the future from such limited evidence.
根据如此有限的证据对未来作出推测是有风险的。
The results were obtained by extrapolation from previous experiments.
这些结果是通过对先前实验进行外推得到的。
Not this
We need to extrapolation the trend to 2030.
Use this
We need to extrapolate the trend to 2030.
extrapolation是名词，动词形式是extrapolate；谓语位置需要用动词，不能把名词直接当动词用。
Not this
The forecast is an extrapolation on past sales data.
Use this
The forecast is an extrapolation from past sales data.
extrapolation表示“依据……推断”时用介词from引出依据/来源，on表示“关于”，不表示推断所依据的数据。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
通过推测；用外推法
The estimate was made by extrapolation from the available figures.
这个估计是根据现有数字推测出来的。
线性外推
A linear extrapolation of the data suggests the trend will continue.
对数据进行线性外推表明，这一趋势将会持续。
基于数据的推断
Any conclusion here is an extrapolation from data collected over several years.
这里的任何结论都是基于多年收集的数据推断出来的。
对趋势的外推
Extrapolation of trends beyond the observed period can be misleading.
把趋势外推到观测期以外可能会产生误导。
统计推断
A statistical extrapolation from such a small sample would be dangerous.
从这么小的样本进行统计推断是很危险的。
外推法
The extrapolation method assumes that past patterns will continue into the future.
外推法假定过去的模式将持续到未来。
通过推断；据此推断
By extrapolation, the company's profits should double next year.
根据推断，公司明年的利润应该会翻倍。
由……推断出的结果
This is an extrapolation from the survey data.
这是根据调查数据推断出的结果。
纯粹的推测；单纯的推断
Any forecast beyond that range is pure extrapolation.
超出那个范围的任何预测都只是纯粹的推断。
Use extrapolations naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：extra（超出）+ 把已知曲线向外延伸，就像 interpolation 内插之外再向外推，即‘外推/推断’。
语域：formal 常见场景：academic writing、mathematics and statistics、technical reports 该词通常用于正式、学术或技术语境，多出现在学术论文、数学统计讨论和技术报告中。它既可指数学上的“外推法”，也可指根据已知事实作出的“推断”；日常口语中较少直接使用，更常用 guess、prediction 等更通俗的说法。
以上词都以 -ation 结尾，重读元音是 /eɪ/，之后跟着 /ʃən/，所以尾音 /eɪʃən/ 与 extrapolation 的尾音 /leɪʃən/ 押韵。注意 extrapolate 虽拼写相近，但读 /ɪkˈstræpəleɪt/，结尾是 /leɪt/，并不押韵；pronunciation 的拼写是 p-r-o-n-u-n-c-i-a-t-i-o-n，不是 pronounciation，但发音仍是 /eɪʃən/。
Dictionary facts from ECDICT, WIKTIONARY.