起步慢迟缓投球无变向失效投出的球挂飞变向或落点失效未能按投者的意图变换方向或落地投不出变向球悬投一个曲线球或变向球失效
Slow start pitch no change of direction failure A thrown ball fails to change direction as intended by the pitcher or fails to land a change of direction throw a curveball or a change of direction failure
以上为机器翻译结果，长、整句建议使用 人工翻译 。