She ran fast to win race.

Meaning: This sentence describes someone who participated in a race and moved very quickly in order to be the first one to reach the finish line.

Choice of Words: Ran means to move quickly using your legs. Fast means at a high speed. Win means to be the first or best in a competition. Race is a competition to see who can reach a certain point first. When you put them together, it means she used her legs to move quickly in order to be the first in the competition.