Word · Frequency #18526
rapidity
迅速;急速;快速
核心释义
the quality or state of being rapid; speed or quickness
- 1.
速度;迅速;快速的状态
speed, swiftness; the condition of being rapid
- 2.
相对于光速的速度度量;定义为 artanh(v),其中 artanh 为双曲反正切,v 为速度(取光速 c=1)
A measure of velocity relative to the speed of light; defined as artanh(v), where artanh is the hyperbolic arctangent, and v = speed (with c = speed of light = 1).
- 3.
粒子束中粒子相对于束轴的速度度量
A measure of the velocity of a particle in a beam relative to the beam's axis
速度;迅速;快速的状态;相对于光速的速度度量;定义为 artanh(v),其中 artanh 为双曲反正切,v 为速度(取光速 c=1);粒子束中粒子相对于束轴的速度度量;迅速;急速
用法In use
The rapidity of the company's growth surprised everyone.
用法提示:此处 rapidity 是名词,意为“迅速、速度”,作介词 of 的宾语。
She was impressed by the rapidity with which he finished the report.
用法提示:rapidity 作名词,表示“快速”,与 with which 搭配说明完成的方式。
The rapidity of technological change makes it hard to keep up.
用法提示:rapidity 为名词,指“迅速”的程度,在句中作主语的一部分。
the rapidity of sth
后接名词,表示某事物迅速的程度。
The rapidity of the change surprised everyone.
变化的速度让所有人惊讶。
the rapidity with which ...
后接从句,说明某动作或过程发生得有多快。
相关词与表达Connections
搭配Collocations
- the rapidity of change
- 变化之迅速
- The rapidity of change in technology can be overwhelming.技术变化之迅速可能令人不知所措。
- with great rapidity
- 以极快的速度
- The disease spread with great rapidity.这种疾病以极快的速度传播。
- the rapidity with which
- ……的速度之快
- The rapidity with which she learned English surprised everyone.她学英语速度之快让所有人惊讶。
- increasing rapidity
- 越来越快的速度
- The increasing rapidity of urban development raises environmental concerns.城市发展速度越来越快,引发了环境方面的担忧。
学习提示Learner notes
记忆技巧Memory Tip
rapid 本就表示“快速的”,加上名词后缀 -ity 变成名词“迅速”。想象跑步冲刺时那种飞快的状态。
语境与语域Context & Register
语域:formal 常见场景:学术写作、正式报告、文学描写 该词多用于较正式的书面语,如学术文章、正式报告或文学描写;日常口语中通常更常用 speed 或 quickness。
发音与拼写Pronunciation & Spelling
这些以 -idity 结尾的词(stupidity, humidity, timidity, validity, solidity)与 rapidity 同韵;拼写相近的 rapid 发音不同(/ˈræpɪd/),不押韵。
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.