"fastball"的定义和意义

What is a "fastball"?

A fastball in baseball or softball is a pitch thrown with high speed, usually straight and with little or no movement. It is one of the most common and effective pitches because its speed makes it difficult for batters to react in time. A fastball is often used to challenge the batter, as it is typically thrown as a direct, straight pitch aimed at the strike zone. Pitchers can adjust the speed of their fastballs, but the key feature is its quickness, making it tough for the batter to make solid contact.