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| NOUN |
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| /spiːd/ |
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| 1 | C/U the rate at which something moves 速度 |
| +of The device measures the speed and direction of the wind. 该装置测量风的速度和方向。 |
| top speed (=the fastest that something can travel) The new model has a top speed of 125 miles per hour. 最高速度 |
| pick up/gather speed (=go faster) The hurricane has picked up speed and turned towards the coast. 使加速 |
| | 1a | the rate at which a machine works 速度；速率 | | a printing speed of 6 pages per minute 每分钟6页的打印速度 | |
| | 1b | the rate at which something happens 速度；速率 | | They were working with incredible speed. 他们以令人难以置信的速度工作着。 | |
| | 1c | movement that is very fast 快速的移动 | | The main advantage of this bike is its speed. 这辆自行车的主要优势是速度快。 | | at speed (=very fast) The car drove off at speed. 高速地 | |
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| 2 | C a gear |
| a car with a 5-speed gearbox 5挡变速汽车 |
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| 3 | C the time it takes for a camera’ s shutter to open and close to allow light in 快门速度 |
| shutter speed 快门速度 |
| | 3a | a measurement of how quickly a film reacts to the light that comes into a camera （胶卷的）感光度 | |
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| 4 | U an illegal drug that makes people feel as if they have a lot of energy 安非他明（一种毒品） |
| PHRASE |
| - | up to speed
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| 1 | informal knowing everything you need to know about something 了如指掌 | +on The president is being kept up to speed on the situation. 总统对形势了如指掌。 | |
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| 2 | at the speed or level that is expected 达到预期速度（或水平） |
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