Index
01
the finger adjacent to the thumb, commonly used for pointing
例子
She wore a ring on her index finger.
The doctor examined a cut on his index.
02
指数, 指标
a system that provides the amount of prices, costs, etc. so that one can compare them with their previous value
例子
The Consumer Price Index ( CPI ) is used to measure inflation by comparing current prices to those of a base year.
消费者价格指数（CPI）通过将当前价格与基准年的价格进行比较来衡量通货膨胀。
Investors closely monitor the stock market index to gauge the overall performance of the market.
投资者密切关注股市指数以衡量市场的整体表现。
03
an alphabetical listing of topics, names, or terms with references to their locations, typically in a book or document
例子
The book includes an index for quick reference.
She looked up the topic in the index.
04
a value or ratio derived from observed data that reveals relative changes over time or between items
例子
The industrial production index rose last month.
The energy consumption index fluctuated seasonally.
05
a notation indicating the number of times a quantity is multiplied by itself
例子
In the equation x², 2 is the index.
The index tells how many times the base is used as a factor.
to index
01
编入索引, 分类
to systematically organize and list items for easy reference or retrieval
Transitive: to index records or documents
例子
They indexed the books in the library according to the Dewey Decimal System.
他们根据杜威十进制系统对图书馆的书籍进行了索引。
She indexed the research articles by author name for efficient searching.
她按作者姓名索引了研究文章以便高效搜索。
02
指数化, 根据指数调整
to adjust wages, prices, or other economic variables according to an index
Transitive: to index prices or wages to an economic factor
例子
The government decided to index the minimum wage to inflation.
政府决定将最低工资与通货膨胀挂钩。
The company indexed its employees' salaries to the consumer price index.
该公司将员工的工资与消费者价格指数挂钩。
03
编入索引, 索引
to create or add an index to a document, collection, or system
Transitive: to index a document or book
例子
The librarian indexed the new books so students could find them quickly.
图书管理员索引了新书，以便学生可以快速找到它们。
She indexed the research articles to help her locate key findings more easily.
她索引了研究文章，以帮助她更轻松地找到关键发现。
