2 sentences

1. 为什么要限制最高速度？

   wèi​shén​me yào xiàn​zhì zuì​gāo sù​dù?

   Why limit the top speed?

   Source: CCMatrix

2. 在炎热的天气里不要指望最高速度。

   zài yán​rè de tiān​qì li bù​yào zhǐ​wang zuì​gāo sù​dù.

   Don't expect top speeds in hot weather.

   Source: CCMatrix