Al Capone became well-known for being a crime boss in Chicago when alcohol was illegal.

这段话是说：阿尔·卡彭是芝加哥有名的犯罪大佬。

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The Departed, directed by Martin Scorsese, features Jack Nicholson as crime boss Frank Costello.

NPR: Ensemble Films Fill the Screen with Cameos

Federal officials agree that Guzman should be considered a Chicago crime boss, despite his removed location.

BBC: Chicago names Joaquin Guzman public enemy No. 1

Tom Wilkinson plays an Italian crime boss -- how did they think of that?

WSJ: Holy Melancholy, 'Batman'!