顾名思义，打非就是打击非法行为。在网络用语中表示打击非法或者非主流的传统行为等。
打击非法投机活动 strike out at speculation ; crack down on speculation
非打印字符 nonprinting characters ; non-printable ; nonprintable character
严厉打击非法用工 to severely punish illegal employment
非打印 NON PRINT ; None Printing
非击打式打印机 non-impact printer
非击打式印刷 non-impact printing
打得非常好 very well done pard
非击打式印刷机 non-impact printer
非打击式打印机 nonimpact printer
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