Word · Frequency #1245
speed
速度；速率
distance travelled per unit time; rate of motion
- 1.
The state of moving quickly or the capacity for rapid motion.
快速移动的状态或快速运动的能力
- 2.
distance travelled per unit time
单位时间内的行驶距离
- 3.
The rate of motion or action, specifically the magnitude of the velocity; the rate distance is traversed in a given time.
运动或行动的速度,特别是速度的大小；在给定时间内行进的距离速率
- 4.
a rate (usually rapid) at which something happens
某事发生的速度(通常很快)
- 5.
The sensitivity to light of film, plates or sensor.
胶片、底片或传感器的感光度
- 6.
changing location rapidly
快速改变位置
- 7.
The duration of exposure, the time during which a camera shutter is open (shutter speed).
曝光时间,相机快门打开的时间(快门速度)
- 8.
The largest size of the lens opening at which a lens can be used.
镜头可用的最大光圈大小
- 9.
The ratio of the focal length to the diameter of a photographic objective.
焦距与摄影物镜直径之比。
- 10.
A third-order measure of derivative price sensitivity, expressed as the rate of change of gamma with respect to changes in the underlying asset price.
衍生品价格敏感性的三阶度量,表示伽玛随标的资产价格变化的速率。
快速；迅速；速度；进度；感光度；快门速度；最大光圈；光圈值
In use
The train was travelling at full speed through the countryside.
Could you check the speed of our internet connection? It feels slow today.
He reduced his speed when he saw the police car behind him.
the project advanced with gratifying speed
Connections
Collocations
- high speed
- 高速
- The train travels at high speed.火车高速行驶。
- top speed
- 最高速度
- The car can reach a top speed of 200 mph.这辆车最高时速可达200英里。
- speed limit
- 速度限制
- You must obey the speed limit on the highway.你在高速公路上必须遵守速度限制。
- average speed
- 平均速度
- The average speed of the runner was 6 meters per second.跑步者的平均速度是每秒6米。
- pick up speed
- 加速
- The bicycle began to pick up speed as it went downhill.自行车下坡时开始加速。
- gain speed
- 增加速度
Learner notes
Memory Tip
speed 音似 '速度' 的 '速'，想象汽车加速时的速度感。
Context & Register
通常用于物理、交通或日常对话中指物体移动的快慢程度，属于中性用法，在口语和书面语中都常见。
Grammar Note
表示速度的概念时通常不可数；表示具体速度时可数，常与 at 连用，如 at a speed of。
Pronunciation & Spelling
All listed words rhyme with "speed" (/spid/): they end in /-id/ with a long 'e' sound. No lookalikes that sound differently are included.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 4，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 DICTIONARY_API_DEV, ECDICT, WIKTIONARY.