虚函数简单地向标准输出写一行文本。
The virtual functions simply write a line of text to standard output.
第26 - 34行：虚函数。
如血气虚少、肝肾亏虚、寒邪凝滞、气滞血淤，导致经行滞涩不畅、不通则痛也。
Qi less blood, kidney and liver insufficiency, Cold staging, gas stagnation blood stasis caused by the circulation of fluid line, General Clauses pain.
如血气虚少、肝肾亏虚、寒邪凝滞、气滞血淤，导致经行滞涩不畅、不通则痛也。
Qi less blood, kidney and liver insufficiency, Cold staging, gas stagnation blood stasis caused by the circulation of fluid line, General Clauses pain.
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