All these have resulted in a higher frequency both of crimes committed by professionals and by enthusiastic amateurs---in murder, drug smuggling, robbery, pocket-picking, etc.

• 以上所有这些都促成了职业罪犯和热衷的业余罪犯们在凶杀、毒品走私、抢劫、扒窃等方面的高犯案频率。