incidence
gb/ˈɪnsɪdəns/ us/ˈɪnsɪdəns/
C1
英语
~ 8700
义项
0 个义项
名词
formal
C1
quantity
1
rate at which something occurs
How often something happens in a group of people or in a place during a certain time, usually used for problems like disease or crime.
用法模式：
the incidence of [something] (in [a group/place])
常见错误：
Learners often confuse "incidence" with "incident". "Incident" is a single event (for example, a fight or an accident), while "incidence" is about how often events of a certain type happen in a group or time period. Another mistake is to say *"an incidence"* when they mean one event; in that case, "incident" or "case" is correct.
近义词
frequency (General word for how often something happens; less formal and not especially used for medical or crime data.)
|
rate (Very close in meaning, but broader and not limited to events; often used in everyday speech where 'incidence' sounds more technical or formal.)
|
prevalence (Often used in health and medical contexts; focuses more on how widespread something is at a given time, while 'incidence' focuses on new cases over a period.)
反义词
rarity (Suggests that something happens very seldom, which is the opposite idea of a high incidence.)
搭配
high incidence of
|low incidence of
|incidence rate
|incidence of cancer
|disease incidence
|crime incidence
主题
health
|statistics
|society
|science
例句
- The incidence of diabetes has risen sharply over the past decade.
- Researchers are studying the incidence of lung cancer in urban areas.
- Several policies were introduced to reduce the incidence of violent crime.
- There is a particularly high incidence of malaria in this region during the rainy season.
学习者例句
- The incidence of heart disease is higher in older people.
- We looked at the incidence of car accidents in the city last year.
- Better public health can lower the incidence of many diseases.
- The report shows a low incidence of serious crime in this town.
名词
technical
C2
relation
2
meeting of a ray with a surface
In science, the moment when light, sound, or another wave hits a surface, often talked about together with the angle.
用法模式：
the incidence of [light/sound/etc.] on [a surface]
常见错误：
Learners may mix up "incidence" and "incident" in physics contexts. "Incident" is an adjective in phrases like "incident ray" (the ray that is coming in), while "incidence" is the noun for the act or angle of hitting the surface.
近义词
impingement (A technical term also meaning striking against or upon a surface, used mainly in scientific or formal contexts.)
搭配
angle of incidence
|normal to the point of incidence
|point of incidence
|light incidence
|incidence on the surface
主题
science
|physics
例句
- The experiment measures the angle of incidence and the angle of reflection of the light beam.
- At high angles of incidence, more of the radar signal is reflected away from the receiver.
- The efficiency of the solar panel changes with the incidence of sunlight on its surface.
学习者例句
- We can change the angle of incidence of the light in this experiment.
- The incidence of the laser beam on the mirror must be very precise.
- The scientist explained how the incidence of sunlight affects the mirror.
名词
technical
C2
relation
3
distribution of tax or cost burden
In economics, how the real cost of a tax or fee is shared between different people or groups, for example between buyers and sellers.
用法模式：
the incidence of [a tax/cost] on [a group]
常见错误：
Learners sometimes think "tax incidence" means how often a tax is used. In economics, it does not mean frequency; it means who really pays the tax in the end (for example, buyers or sellers).
近义词
burden distribution (Describes how a load or cost is shared; less technical and more descriptive than the fixed term "incidence" in economics.)
反义词
benefit distribution (Focuses on how advantages, rather than burdens, are shared; used as a conceptual opposite in discussions of who gains versus who pays.)
搭配
tax incidence
|incidence of taxation
|incidence of the cost
|shifting the incidence
|incidence on consumers
主题
economics
|business
|finance
例句
- Economists disagree about the true incidence of the new carbon tax.
- The study analyzes the incidence of taxation on low-income households.
- Changes in market structure can shift the incidence of a tax from producers to consumers.
学习者例句
- The professor talked about the incidence of a sales tax on buyers and sellers.
- In this model, the incidence of the new tax is mostly on workers.
- We must understand the incidence of the fee before we change the law.
语法
词典原形
incidence
IPA
GB/ˈɪnsɪdəns/
US/ˈɪnsɪdəns/
音节与重音
in - cid - ence （3 个音节）
Stress on 1st syllable (in)
词形变化
Noun
- Base: incidence
- Plural: incidences
词族
Forms
incidences
noun
Core family
Related words
Advanced or less common
coincident
adjective
相关表达
angle of incidence
1/ˈæŋɡəl əv ˈɪnsɪdəns/
fixed phrase
technical
angle of an incoming ray to a surface
The angle between a ray of light, sound, etc. that hits a surface and a line that is straight up from that surface at the point where it hits.
例句
- According to the law of reflection, the angle of incidence equals the angle of reflection.
- By changing the angle of incidence, we can focus more light onto the sensor.
- The diagram shows how the angle of incidence affects the brightness of the reflected beam.
incidence rate
1/ˈɪnsɪdəns ɹˈeɪt/
fixed phrase
technical
measure of new cases over time
A number that shows how many new cases of a disease or problem happen in a group of people during a set time.
例句
- The incidence rate of the infection dropped after the vaccination campaign.
- Researchers compared the incidence rate of heart disease between smokers and non-smokers.
- Public health officials monitor the incidence rate to detect outbreaks early.
tax incidence
1/tˈæks ˈɪnsɪdəns/
fixed phrase
technical
how a tax burden is shared
How the real cost of a tax is divided between different people or groups, like buyers, sellers, or workers.
例句
- The tax incidence depends on how sensitive buyers and sellers are to price changes.
- Policy makers must consider the tax incidence on low-income families before raising VAT.
- The report explains that the tax incidence falls mainly on consumers, not on producers.