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指数
An index is a system by which changes in the value of something and the rate at which it changes can be recorded, measured, or interpreted.
例句
...the UK retail price index.
英国零售价格指数
...economic indices.
经济指数
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索引
An index is an alphabetical list that is printed at the back of a book and tells you on which pages important topics are referred to.
例句
Curiously, the word 'gay' does not occur in the index...
奇怪的是,gay这个词没有出现在索引当中。
There's even a special subject index.
甚至有一个专项索引。
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VERB
为(书等)编索引
If you index a book or a collection of information, you make an alphabetical list of the items in it.
例句
This vast archive has been indexed and made accessible to researchers...
这个存量巨大的档案室的所有文件都已编了索引,可供研究人员使用。
Painters and sculptors are indexed separately...
画家和雕刻家被分开，分别做了索引。
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VERB
使(与…)相应挂钩;使指数化
If a quantity or value is indexed to another, a system is arranged so that it increases or decreases whenever the other one increases or decreases.
例句
Minimum pensions and wages are to be indexed to inflation.
最低养老金和最低工资要与通货膨胀挂钩。
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标志;迹象;指标
If one thing is an index of another, it indicates what the other thing will be like.
例句
Weeds are an index to the character of the soil.
杂草是反映土壤特征的一个指标。
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(数学中的)指数
In mathematics, indices are the little numbers that show how many times you must multiply a number by itself. In the equation 32 = 9, the number 2 is an index.