这辆车的车速很快。
zhè liàng chē de chēsù hěnkuài 。
The speed of this car is very fast.
你知道这条路的车速限制吗？
nǐ zhīdào zhè tiáo lù de chēsù xiànzhì ma ？
Do you know the speed limit on this road?
在高速公路上，车速通常很快。
zài gāosùgōnglù shàng ， chēsù tōngcháng hěnkuài 。
On the highway, the speed of vehicles is usually very fast.