I saw a hill rat scurrying across the road.

I saw a group of hill rats scurrying across the path.

She approached every challenge with high-spiritedness.

This new train is higher-speed than the old one.

The high speeds of the cars on the highway were impressive.

This car has a higher speed than the previous model.

High-speed steels are widely used in the manufacturing industry.

High-speed steel is a type of tool steel that is known for its ability to maintain its hardness even at high temperatures.

The car was traveling at a high speed.

The high speed of the car impressed everyone.