forward speed

例句：

1. 1. The car accelerates to a forward speed of 60 miles per hour.
   这辆车以每小时60英里的速度加速。
2. 2. The ship's forward speed is crucial for its survival.
   船的前进速度对它的存活至关重要。
3. 3. The train's forward speed allows it to cover the distance in less time.
   火车的前进速度让它能更快地完成这段旅程。