1 [U] fast movement 迅速:
I intend to start the race slowly and gradually pick up speed.比赛开始时我打算慢慢跑,然后渐渐加快速度。The bus was travelling at speed when it hit the wall.公共汽车在快速行驶时撞在墙上。
2 [C,U] the rate at which sb/sth moves or travels 速度;速率:
The car was travelling at a speed of 140 kilometres an hour.汽车正以时速140公里行驶。to travel at top/ high/ full/ maximum speed.以全速╱高速╱全速╱最高速度行驶
1 to go or move very quickly 以高速前进或移动:
He sped round the corner on his bicycle.他骑自行车急速绕过拐角。
2 (only used in the continuous tenses 只用于进行时) to drive a car, etc faster than the legal speed limit 超速行车等:
The police said she had been speeding.警方说她超速行车。
speed (sth) up (past tensepast participlespeeded) to go or make sth go faster 加速;加快:
The new computer system should speed up production in the factory.新的计算机系统应该能加快工厂的生产。