Word · Frequency #15655
aperture
光圈；孔径
a device that controls how much light is let in
- 1.
A small or narrow opening, gap, slit, or hole.
小或窄的开口、缝隙、裂口或孔洞
- 2.
a device that controls amount of light admitted
控制进光量的装置
- 3.
A hole which restricts the diameter of the lightpath through one plane in an optical system.
光学系统中限制某一平面光路直径的孔
- 4.
a natural opening in something
某物上的天然开口
- 5.
The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array.
用于接收和发射通信卫星数据射频能量的大口径天线,尤指地球静止轨道上的；对通信卫星而言通常是大型反射碟形天线,有时称为阵列
- 6.
an man-made opening; usually small
人造开口；通常较小
小或窄的开口、缝隙、裂口或孔洞；控制进光量的装置；光学系统中限制某一平面光路直径的孔；某物上的天然开口；用于接收和发射通信卫星数据射频能量的大口径天线,尤指地球静止轨道上的；对通信卫星而言通常是大型反射碟形天线,有时称为阵列
In use
To take a clear photo in bright sunlight, you need to adjust the aperture on your camera.
A wider aperture lets more light reach the sensor, which helps in low-light conditions.
She set a small aperture so that both the mountains and the flowers in the foreground would be sharp.
adjust/set the aperture
在摄影中，aperture 指光圈；set 常用于设置具体数值。
Set the aperture to f/2.8 for a blurry background.
将光圈设为 f/2.8，以得到模糊的背景。
a wide/small aperture
wide aperture 意为大光圈，small aperture 意为小光圈。
A wide aperture lets in more light.
大光圈能让更多光线进入。
the aperture of [sth]
Connections
Collocations
- wide aperture
- 大光圈
- A wide aperture lets in more light and creates a blurred background.大光圈能让更多光线进入，并产生虚化的背景。
- narrow aperture
- 小光圈
- Use a narrow aperture to keep both the foreground and background in focus.使用小光圈可以使前景和背景都保持清晰。
- aperture priority
- 光圈优先模式
- I always shoot in aperture priority when I want to control the depth of field.当我想要控制景深时，我总是使用光圈优先模式拍摄。
- aperture setting
- 光圈设置
- Adjust the aperture setting before you take the photo.拍照前先调整光圈设置。
- lens aperture
- 镜头光圈
- The lens aperture determines how much light reaches the sensor.镜头光圈决定了有多少光线到达传感器。
Learner notes
Memory Tip
aperture 拆成 a + per + ture，想象相机镜头上可调大小的‘孔’(光圈)，光线从小口透入。
Context & Register
语域：neutral 常见场景：photography、camera settings、optics 表示相机进光孔时，aperture 在摄影和光学领域是常见的中性技术用语；日常口语中通常较少使用，更常说 opening 或直接提 f 值。
Pronunciation & Spelling
真正与 /ˈæpɝtʃɝ/ 押韵的词很少。overture 虽然拼写以 -erture 结尾、最后也有 /ɚtʃɚ/，但重读元音是 /oʊ/，所以不是完全押韵。picture、capture、lecture、structure、culture 都以 -ture 拼写结尾、读 /tʃɚ/，但重读元音不同（aperture 在 /tʃ/ 前还多一个 /ɚ/），它们只是拼写相近的形近音异词。
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
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.