The catcher wanted the pitcher to pitch out and see if they could catch the runner stealing.
捕手要投手投出一个远球, 以看看他们是否能捉到盗垒的人。
How can they make me catcher just because I am big?
他们怎么可以因为我块头大, 就要我当捕手?
The catcher signaled for a low fast ball.
捕手发出投快速低球的信号。