n.指标；标记体

The Consumer Price Index (CPI) is a measure of the average change in prices over time for goods and services.
消费者价格指数（CPI）是衡量一段时间内商品和服务平均价格变动的指标。
The stock market index rose sharply this morning, indicating positive investor sentiment.
今天早上股市指数大幅上涨，表明投资者情绪乐观。
The Dow Jones Industrial Average is one of the most widely followed stock market indices in the world.
道琼斯工业平均指数是全球最受关注的股市指数之一。
The Human Development Index ranks countries based on life expectancy, education, and income.
人类发展指数根据预期寿命、教育和收入对国家进行排名。
The happiness index in our city has been steadily increasing due to improvements in public services.
由于公共服务的改善，我市的幸福指数一直在稳步上升。
The school uses a grading index to evaluate students' overall academic performance.
学校使用评分指数来评估学生的整体学业表现。
According to the pollution index, this city ranks high in air quality compared to others.
根据污染指数，这个城市的空气质量在与其他城市相比排名很高。
The Beaufort scale is an index that classifies wind strength based on observed conditions at sea.
贝弗福德风力等级是一个根据海上观测条件对风力进行分类的指数。
The Biodiversity Index helps scientists understand the variety of species within a given ecosystem.
生物多样性指数帮助科学家了解特定生态系统内的物种多样性。
The Gini coefficient is an index used to measure income inequality within a nation or social group.
基尼系数是一个用于衡量一国或社会群体内部收入不平等程度的指数。