curve ball

The pitcher threw a curve ball that surprised the batter.

投手投出一个曲线球，让击球手措手不及。

He practiced throwing curve balls every afternoon to improve his pitching.

他每天下午练习投曲线球以提高投球技术。

Learning to hit a curve ball requires good timing and focus.

学会击中曲线球需要良好的时机把握和注意力集中。