brightness
gb/bɹˈaɪtnəs/ us/bɹˈaɪtnəs/
A2
英语
~ 5800
义项
0 个义项
名词
A2
quantity
1
amount or intensity of light
How much light something has or gives, making it look lighter or darker.
用法模式：
the brightness of [something]
常见错误：
Learners sometimes say *"open the brightness"* or *"close the brightness"* instead of *"increase / turn up the brightness"* or *"decrease / turn down the brightness"*. They may also confuse the adjective *bright* with the noun *brightness*, saying *"I like the bright of this room"* instead of *"I like the brightness of this room"*.
近义词
lightness (Often used for how light or dark a color, room, or surface appears; very close in everyday use.)
|
luminosity (More technical or scientific, especially for stars, screens, or measured light output.)
反义词
darkness (Describes the absence of light, the opposite condition of high brightness.)
|
dimness (Describes low light levels rather than a complete lack of light.)
搭配
adjust the brightness
|brightness level
|screen brightness
|full brightness
|increase the brightness
|brightness and contrast
主题
daily life
|science
|technology
|core_vocabulary
例句
- The sudden brightness of the headlights made it hard to see the road.
- You can reduce the brightness of the lamp if it’s hurting your eyes.
- The brightness of the stars was incredible in the clear mountain sky.
- I turned up the screen brightness so I could read the text outside.
- The photographer adjusted the brightness of the studio lights before the shoot.
学习者例句
- The brightness of the room changes when you open the curtains.
- Please lower the brightness of your phone; it is too strong.
- At night, the brightness of the streetlights helps people see.
- I like a high brightness on my laptop screen.
- We enjoyed the brightness of the morning sun.
unknown
B2
property
2
mental quickness or intelligence
The ability to learn and understand things fast and well.
用法模式：
[someone]'s brightness
常见错误：
Learners often use the adjective *bright* instead of the noun *brightness*, saying *"I like her bright"* instead of *"I like her brightness"*. They may also confuse this meaning with *brightness* related to light; context about thinking, ideas, or study usually signals the intelligence sense.
近义词
intelligence (General term for mental ability; often slightly more formal and broader than brightness.)
|
cleverness (Emphasizes being smart and sometimes inventive; can sound a bit more informal than brightness.)
反义词
stupidity (Strongly negative term for a very low level of intelligence.)
|
dullness (Suggests slow or weak mental ability, the opposite of mental brightness.)
搭配
natural brightness
|intellectual brightness
|mental brightness
|the brightness of [someone]'s mind
|remarkable brightness
主题
education
|emotions
|core_vocabulary
例句
- Her brightness and curiosity impressed all of her teachers.
- The interview panel quickly noticed the candidate’s brightness.
- Even as a child, his brightness made complex ideas seem simple to him.
- They valued not just experience but also the brightness of new graduates.
- The essay shows a real brightness of thought and expression.
学习者例句
- The teacher talked about the boy’s brightness in math.
- Her brightness helps her learn new languages quickly.
- The manager was surprised by the intern’s brightness.
- People admired his brightness and hard work.
- Her brightness made the difficult problem look easy.
名词
B2
state
3
cheerful or hopeful quality
A happy and hopeful feeling or quality that makes people or places seem nice and positive.
用法模式：
the brightness of [someone/something]
常见错误：
Learners sometimes think this meaning always refers to light. In emotional contexts with words like *smile, mood, personality, life, day*, *brightness* usually means happiness or hope, not physical light.
近义词
cheerfulness (Focuses on a happy mood; very close in meaning in emotional contexts.)
|
optimism (Highlights hope and positive expectations about the future rather than general liveliness.)
反义词
gloom (Suggests a dark, sad, or hopeless mood, the opposite of emotional brightness.)
|
sadness (General negative feeling that contrasts with brightness as cheerfulness.)
搭配
the brightness of her smile
|the brightness of his personality
|bring brightness to [someone]'s day
|a moment of brightness
|add brightness to [something]
主题
emotions
|daily life
|core_vocabulary
例句
- Her laughter brought a sudden brightness to the quiet room.
- Even in hard times, he tried to keep some brightness in his voice.
- The children’s excitement added brightness to the rainy afternoon.
- After the bad news, the brightness in his eyes slowly disappeared.
- Her kindness and brightness made new employees feel welcome.
学习者例句
- The brightness of her smile made me feel better.
- His jokes bring brightness to our office.
- There was little brightness in her life that year.
- Music adds brightness to my mornings.
- We want more brightness and hope in this story.
名词
technical
B1
property
4
lightness setting in images/screens
How light or dark a picture, video, or color looks, usually changed with a control on a screen or in software.
用法模式：
brightness of [an image/a screen]
常见错误：
Learners sometimes confuse *brightness* with *contrast* when talking about images or screens. *Brightness* makes the whole image lighter or darker, while *contrast* changes the difference between light and dark parts.
近义词
lightness (In design and color theory, often used for how bright or dark a color appears; very close in technical contexts.)
反义词
darkness (Refers to very low brightness in an image or on a screen.)
搭配
brightness control
|brightness setting
|brightness slider
|brightness adjustment
|brightness value
|brightness and contrast
主题
technology
|media
|science
|arts_entertainment
例句
- You can fix the photo by lowering the brightness and increasing the contrast.
- The app lets you save different brightness settings for day and night.
- On this monitor, the default brightness is too high for photo editing.
- She adjusted the brightness slider until the colors looked more natural.
- The update added automatic control of screen brightness based on room light.
学习者例句
- I changed the brightness of the picture on my phone.
- This TV has a special mode that changes the brightness for games.
- You can control the brightness of the screen in the settings menu.
- The image looks washed out because the brightness is too high.
- Lower the brightness so the movie looks better in a dark room.
语法
词典原形
brightness
IPA
GB/bɹˈaɪtnəs/
US/bɹˈaɪtnəs/
音节与重音
bright - ness （2 个音节）
Stress on 1st syllable (bright)
词形变化
Noun
- Base: brightness
- Plural: brightness, brightnesses
词族
相关表达
adjust the brightness
1/əd͡ʒˈʌst ðə bɹˈaɪtnəs/
fixed phrase
change how bright something is
To change how light or dark a screen, image, or light is.
例句
- If the screen is too dark, adjust the brightness in the settings.
- You should adjust the brightness of the photo before you print it.
- He adjusted the brightness so the projector image was easier to see.
brightness and contrast
1/bɹˈaɪtnəs ˈænd kˈɑntɹæst/
fixed phrase
technical
paired image/display settings
Two important settings for pictures and screens: brightness makes everything lighter or darker, and contrast changes the difference between light and dark parts.
例句
- You can improve most photos by changing the brightness and contrast.
- The TV menu has simple controls for brightness and contrast.
brightness level
1/bɹˈaɪtnəs lˈɛvəl/
fixed phrase
specific setting for brightness
A number or setting that shows how bright a screen, light, or image is.
例句
- The phone lets you save different brightness levels for day and night.
- He set the brightness level to fifty percent to save battery.
full brightness
1/fˈʊl bɹˈaɪtnəs/
fixed phrase
maximum possible brightness
The highest brightness that a screen or light can have.
例句
- The laptop is hard to see in the sun even at full brightness.
- Running the display at full brightness uses more power.
screen brightness
1/skɹˈin bɹˈaɪtnəs/
fixed phrase
brightness of a digital screen
How bright or dark the display of a phone, computer, TV, or other screen is.
例句
- Automatic screen brightness helps save battery on many phones.
- You should lower your screen brightness at night to protect your eyes.
turn down the brightness
1/tˈɚn dˈaʊn ðə bɹˈaɪtnəs/
phrasal verb
lower the brightness setting
To make a screen, light, or image less bright by changing its control.
例句
- Please turn down the brightness; the screen is hurting my eyes.
- He turned down the brightness before going to bed.
turn up the brightness
1/tˈɚn ˈʌp ðə bɹˈaɪtnəs/
phrasal verb
increase the brightness setting
To make a screen, light, or image brighter by changing its control.
例句
- Can you turn up the brightness? I can’t read the text.
- She turned up the brightness on her tablet to watch the movie outside.