big league
noun
1- a group of teams in a professional sport, especially baseball, competing for a championship at the highest level（尤指棒球）职业球队协会。
1.1
the big league
informal a very successful or important group〈非正式〉非常成功（或重要）的团体：the film brought him into the movie world's big league.
这部电影使他跻身于一流电影人之列。
派生词
big leaguer
noun一流水平的选手。