Word · Frequency #1793
indices
指数;指标
indices is the plural of index.
核心释义
a number or ratio derived from observed facts that shows relative changes over time
- 1.
用于比较变量或参考数值的数值标度
a numerical scale used to compare variables with one another or with some reference number
- 2.
从一系列观测事实中得出的数值或比率,可揭示随时间变化的相对变化
a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time
- 3.
表示一个量自乘次数的数学符号
a mathematical notation indicating the number of times a quantity is multiplied by itself
标度;幂指数;用于比较变量或参考数值的数值标度;从一系列观测事实中得出的数值或比率,可揭示随时间变化的相对变化;表示一个量自乘次数的数学符号
用法In use
The consumer price index rose by two percent last year.
用法提示:此句中 index 为名词,意为“指数”,作主语,指衡量物价变化的数值指标。
Economists compare several indices to judge economic health.
用法提示:此句中 indices 是 index 的复数形式,为名词,作宾语,意为“指数、指标”。
Your test score is an index of your progress in this course.
用法提示:此句中 index 为名词,意为“指标”,作表语,说明用来衡量进步的标准。
index of [noun phrase]
表示某物的索引列表或目录。
The index of the book is organized alphabetically.
这本书的索引是按字母顺序排列的。
a/an [adjective] index of [noun phrase]
表示某种度量或指标,形容词描述其性质。
相关词与表达Connections
搭配Collocations
- subject index
- 主题索引
- Use the subject index to find articles on global warming.使用主题索引查找关于全球变暖的文章。
- price index
- 价格指数
- The consumer price index rose by 0.5% last month.上个月消费者价格指数上涨了0.5%。
- index card
- 索引卡
- She wrote each vocabulary word on an index card.她把每个词汇写在一张索引卡上。
- index fund
- 指数基金
- Investing in an index fund is a low-cost way to track the market.投资指数基金是追踪市场的低成本方式。
- index finger
- 食指
学习提示Learner notes
记忆技巧Memory Tip
index 就像食指,指向书中的信息。
语境与语域Context & Register
语域:neutral 常见场景:academic、finance、statistics 作为名词表示‘指数’时,通常用于学术、金融或统计领域,例如价格指数、经济指数等。在非正式场合较少使用。
发音与拼写Pronunciation & Spelling
All listed words share the spelling ending 'ex' and the final /ɛks/ sound. Note that 'vex', 'hex', and 'flex' are one-syllable words stressed on the vowel, while 'vortex', 'reflex', and 'convex' have stress on the first or second syllable. The target 'index' stresses the first syllable but also ends with /dɛks/.
高价值词汇High-value vocabulary
该词属于 Oxford 核心词汇,值得优先掌握常见搭配和句型。
用法优先级Usage priority
Collins 词频等级为 3,建议结合例句记忆,而不是只背中文释义。
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WORDNET.