If there were no windows, I wouldn't be able to tell when we were stopped or when we were traveling at 300 km/h.

如果没有窗户，我无法察觉什么时候停车，什么时候我们在以300公里每小时的速度前进。

youdao

Thebault and his team rebuilt "Hydroptere" and in late 2009 it became the fastest boat on the planet, traveling at over 50 knots (over 100 km/h) over 500 meters and one nautical mile.

那次失败之后，泰德和他的团队于2009年底重建了“Hydroptere”， 使它成为地球上速度最快的船，航行速度超过50节（超过100公里/小时）。

youdao

The study estimated that the risk of death for a 70-year-old pedestrian struck at any given speed is roughly equal to the risk of death for a 30-year-old struck by the same vehicle traveling 10 m.p.h. faster.

FORBES: In Crashes, Low Driving Speed Can Cause Serious Injury and Death to Pedestrians, Report Finds