sprinter

n. 短跑运动员

I wasn't claiming that Bob was a world-class sprinter, but he could show his heels to you anyway.

我并非声称鲍勃是一个世界级的短跑运动员，但不管怎样，他会把你远远甩在后面的。

He is more a sprinter than a swimmer.

他是短跑健将，而不是游泳选手。