caster是投手、助攻、家具的轮角和调味瓶的意思，作名词。
My brother has been a caster all his life.我兄弟一生都是个助攻。
This curve is suitable for new caster.该曲线更适于新柱基的设计。
pitcher是棒球投手，Over the next five years,he became one of the greatest pitchers in baseball.在接下来的五年时间里，他成为了最了不起的棒球投手之一。
