Definition: how fast something moves or happens Level: B1
火车正以非常高的速度行驶。
The train was travelling at a very high ___speed.
他因为在高速公路上超速而被罚款。
He was fined for exceeding the ___speed limit on the motorway.
下雨天开车时应该降低速度。
You should reduce your ___speed when driving in the rain.
