1·Therefore, a potential pitcher must learn how to throw before he can possibly learn how to pitch.
因此，一个有潜力的投手必须先学会如何投掷，才能学会投球。
2·It has made him such a popular figure there that the Koreans asked him to throw out the ceremonial first pitch at a professional baseball game - and gave him the colored shoes to boot!
这门课让他在当地成了一个如此知名的人物，以至于韩国人请他在一场职业棒球赛上投出仪式性的第一球，除此之外，他们还送了他这双鲜艳的鞋。
3·To pitch a ball in baseball is to throw it at the batter.
棒球中投球就是向击球员扔球。