时速

shí sù gāo dá sān bǎi gōng lǐ

时速高达三百公里。

It has a top speed of 300 km per hour.

shí sù xiàn zhì

时速限制

speed limit

zhè liàng qì chē de shí sù chāo guò le yīng lǐ

这辆汽车的时速超过了100英里。

The car reached speeds in excess of 100 miles per hour.