Word · Frequency #21541
extrapolation
推断；推测
an inference about the future or an unknown situation based on known facts and observations
指根据已知事实对未知情况或未来进行推断
- 1.
A calculation of an estimate of the value of some function outside the range of known values.
对已知数值范围之外某函数值的估计计算。
- 2.
An inference about some hypothetical situation based on known facts.
基于已知事实对假设情境的推断。
- 3.
The diametric opposite of interpolation.
插值的截然相反概念。
外推法；外插法；对已知数值范围之外某函数值的估计计算。；基于已知事实对假设情境的推断。；插值的截然相反概念。；推断
In use
This forecast is only an extrapolation from last year's sales figures, so it may be wrong.
Any extrapolation from such a small sample is risky.
We cannot rely on a simple extrapolation of current trends to predict the future.
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。
extrapolation of X
His forecast was based on an extrapolation of current trends.
他的预测基于对当前趋势的外推。
make extrapolations about X
表示具体推测时通常用复数形式 extrapolations。
Connections
Collocations
- by extrapolation
- 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。
- linear extrapolation
- 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。
- extrapolation from data
- 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。
- extrapolation of trends
- 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。
- statistical extrapolation
- 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。
Learner notes
Memory Tip
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’。
Context & Register
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。
Pronunciation & Spelling
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/。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.