index

• 名词，指书中的人名、主题或条目等的字母顺序列表；也指用于衡量价值或数量变化的系统或指标。

A noun referring to an alphabetical list of names, subjects, or items in a book, or a system used to measure changes in value or quantity.

不规则复数

1. B1formal

   An alphabetical list of names, subjects, or topics at the end of a book, indicating where they appear.

   索引

   • Check the index at the back of the book for the term 'photosynthesis'.
   • The index lists all the authors mentioned in the encyclopedia.
   • She used the index to find the chapter on ancient Rome.

   同义词catalogconcordancedirectorylistregister

2. Indicator or measureB2formal

   A sign or measure that indicates the value or level of something.

   指标

   • The stock market index fell sharply today.
   • The consumer price index is used to measure inflation.
   • The index of economic growth shows a positive trend.

   同义词barometercluegaugeindicatormeasuresignsignalsymptomtokenyardstick

3. A2informal

   The index finger, the finger next to the thumb.

   食指

   • He pointed at the map with his index finger.
   • She used her index finger to press the button.
   • The index finger is often used for pointing.

   同义词forefinger

• 动词，指为内容编制按字母或其他顺序排列的索引，或系统地对数据进行整理、调整和归类。

A verb meaning to create an alphabetical list of items, or to adjust or arrange data systematically.

1. Create an indexB2formal

   To compile or arrange a list of items, usually in alphabetical order, for reference.

   编制索引

   • The librarian indexed all the new books by author.
   • She indexed the documents for easier retrieval.
   • The software automatically indexes files on the hard drive.

   同义词catalogfilelistregistertabulate

2. Adjust for inflationC1formal

   To link a value, such as wages or prices, to a price index to maintain purchasing power.

   指数化

   • The government indexed pensions to the cost of living.
   • Salaries are indexed to inflation in this contract.
   • The loan interest rate is indexed to the central bank rate.

   同义词adjustescalatelinkpegtie