fastR2软件包中的Pitching2005数据集包含2005年大联盟中每位投手的赛季统计数据。使用该数据集的图形和数字摘要来探索两个联赛之间是否存在差异。请将您的注意力限制在至少参加了5场比赛的投手上变量GS代表game started。您可以选择感兴趣的统计数据。你可以把这段话翻译成英文么

The Pitching2005 dataset in the fastR2 package contains season statistics for each pitcher in the 2005 Major League Baseball. Use graphical and numerical summaries of this dataset to explore if there are differences between the two leagues, with a focus on pitchers who have participated in at least 5 games (variable GS represents "game started"). You can choose the statistics you are interested in.