constant
gb/kˈɑnstənt/ us/kˈɑnstənt/
B1
英语
~ 2000
义项
0 个义项
adjective
B1
property
1
Not changing or varying
Staying the same and not changing.
用法模式：
[something] is constant
常见错误：
Learners sometimes confuse 'constant' with 'consistent'. 'Constant' means unchanging, while 'consistent' means acting or happening in the same way over time.
近义词
unchanging (Emphasizes that something stays exactly the same.)
|
steady (Suggests smoothness or stability without change.)
反义词
variable (Means likely to change or showing variation.)
搭配
constant pressure
|constant temperature
|constant flow
|constant supply
|constant attention
主题
general
|science
|mathematics
|core_vocabulary
|time
例句
- The temperature inside the fridge remains constant.
- He lived in constant fear of losing his job.
- The speed of light is a constant value in physics.
- She kept a constant watch on her children.
- The machine requires constant maintenance.
学习者例句
- The weather is constant here.
- My phone is in constant use.
- The water flow is constant.
- He works at a constant speed.
adjective
B1
property
2
Happening all the time
Happening again and again without stopping.
用法模式：
[someone/something] is in constant [state]
常见错误：
Some learners confuse 'constant' with 'instant'. 'Instant' means happening immediately, not continuously.
近义词
continuous (Stresses no breaks or interruptions.)
|
persistent (Emphasizes ongoing action, sometimes annoyingly.)
反义词
occasional (Happening from time to time, not often.)
搭配
constant noise
|constant calls
|constant interruptions
|constant complaints
主题
daily life
|emotions
|core_vocabulary
|time
例句
- She was annoyed by the constant noise from the street.
- His phone received constant calls throughout the day.
- The baby’s constant crying made it hard to sleep.
- We faced constant interruptions during the meeting.
学习者例句
- There is constant noise outside.
- He gets constant emails at work.
- I hear constant music from the next room.
名词
technical
B2
entity
3
A value that stays the same
A number or amount that always stays the same in math or science.
用法模式：
[a/the] constant [value/number]
常见错误：
Learners may confuse 'constant' (fixed value) with 'coefficient', which multiplies a variable and can be fixed but has a different role.
近义词
fixed value (Plain description of something that does not vary.)
反义词
variable (In math/science, something that can change in value.)
搭配
universal constant
|mathematical constant
|physical constant
主题
mathematics
|science
|technology
|education
例句
- Pi is a mathematical constant representing the ratio of a circle’s circumference to its diameter.
- The speed of light in a vacuum is a universal constant.
- In this equation, 'c' is a constant.
学习者例句
- Pi is a constant in math.
- The speed of light is a constant.
- This number is a constant in the formula.
语法
词典原形
constant
IPA
GB/kˈɑnstənt/
US/kˈɑnstənt/
音节与重音
con - stant （2 个音节）
Stress on 1st syllable (con)
词形变化
Adjective
- Base: constant
Noun
- Base: constant
- Plural: constants
词族
Forms
constants
noun
Core family
constantly
adverb B1
Related words
constancy
noun B2
Negative and opposite forms
inconstant
adjective
相关表达
in constant contact
2/ˈɪn kˈɑnstənt kˈɑntˌækt/
fixed phrase
Communicating very often
Talking or writing to each other very often.
例句
- We stayed in constant contact while she was abroad.
- The teams are in constant contact to coordinate efforts.
constant companion
1/kˈɑnstənt kəmpˈænjən/
fixed phrase
Someone always with another person
A person or thing that is always with someone.
例句
- Her dog was her constant companion for over a decade.
- Pain became his constant companion after the accident.
- Loneliness had been his constant companion since moving away.
- Her phone is her constant companion wherever she goes.
- During that lonely year, anxiety was his constant companion.