問句子解釋

The phrase means that when the wind is extremely fierce, you will know how strong the grass is; when the road is extremely long, you will know how powerful the horse is .

Only severe trials can test one's strength of character, distance tests a horse's stamina

This Chinese idiom should be translated like this:

The stronger the wind, finding the tougher grass
The longer the distance, better understanding of the horse's power

This idiom actual meaning is "time will determine who is better"